SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Varonis Systems Inc. – ‘10-K’ for 12/31/23 – ‘EX-101.DEF’

On:  Tuesday, 2/6/24, at 4:20pm ET   ·   For:  12/31/23   ·   Accession #:  1628280-24-3498   ·   File #:  1-36324

Previous ‘10-K’:  ‘10-K’ on 2/7/23 for 12/31/22   ·   Latest ‘10-K’:  This Filing   ·   17 References:   

Find Words in Filings emoji
 
  in    Show  and   Hints

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/06/24  Varonis Systems Inc.              10-K       12/31/23   94:10M                                    Workiva Inc Wde… FA01/FA

Annual Report   —   Form 10-K   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   1.94M 
 2: EX-4.1      Instrument Defining the Rights of Security Holders  HTML     41K 
 3: EX-10.10    Material Contract                                   HTML    118K 
 4: EX-10.11    Material Contract                                   HTML    134K 
 5: EX-21.1     Subsidiaries List                                   HTML     29K 
 6: EX-23.1     Consent of Expert or Counsel                        HTML     27K 
11: EX-97       Clawback Policy re: Recovery of Erroneously         HTML     46K 
                Awarded Compensation                                             
 7: EX-31.1     Certification -- §302 - SOA'02                      HTML     32K 
 8: EX-31.2     Certification -- §302 - SOA'02                      HTML     32K 
 9: EX-32.1     Certification -- §906 - SOA'02                      HTML     29K 
10: EX-32.2     Certification -- §906 - SOA'02                      HTML     29K 
17: R1          Document And Entity Information                     HTML     93K 
18: R2          Audit Information                                   HTML     32K 
19: R3          Consolidated Balance Sheets                         HTML    137K 
20: R4          Consolidated Balance Sheets (Parentheticals)        HTML     39K 
21: R5          Consolidated Statements of Operations               HTML    104K 
22: R6          Consolidated Statements of Comprehensive Loss       HTML     63K 
23: R7          Consolidated Statements of Changes in               HTML    118K 
                Stockholders' Equity                                             
24: R8          Consolidated Statements of Changes in               HTML     29K 
                Stockholders' Equity (Parenthetical)                             
25: R9          Consolidated Statements of Cash Flows               HTML    124K 
26: R10         General                                             HTML     33K 
27: R11         Significant Accounting Policies                     HTML    179K 
28: R12         Prepaid Expenses and Other Current Assets           HTML     37K 
29: R13         Property and Equipment, Net                         HTML     39K 
30: R14         Accrued Expenses and Other Short Term Liabilities   HTML     38K 
31: R15         Leases                                              HTML     45K 
32: R16         Convertible Senior Notes and Capped Call            HTML     53K 
                Transactions                                                     
33: R17         Goodwill and Intangible Assets                      HTML     39K 
34: R18         Fair Value Measurements                             HTML     91K 
35: R19         Stockholders' Equity                                HTML    119K 
36: R20         Income Taxes                                        HTML    136K 
37: R21         Financial Income (Expenses), Net                    HTML     48K 
38: R22         Geographic Information and Major Customer Data      HTML     53K 
39: R23         Significant Accounting Policies (Policies)          HTML    141K 
40: R24         Significant Accounting Policies (Tables)            HTML    119K 
41: R25         Prepaid Expenses and Other Current Assets (Tables)  HTML     37K 
42: R26         Property and Equipment, Net (Tables)                HTML     38K 
43: R27         Accrued Expenses and Other Short Term Liabilities   HTML     38K 
                (Tables)                                                         
44: R28         Leases (Tables)                                     HTML     46K 
45: R29         Convertible Senior Notes and Capped Call            HTML     45K 
                Transactions (Tables)                                            
46: R30         Goodwill and Intangible Assets (Tables)             HTML     39K 
47: R31         Fair Value Measurements (Tables)                    HTML     89K 
48: R32         Stockholders' Equity (Tables)                       HTML    126K 
49: R33         Income Taxes (Tables)                               HTML    123K 
50: R34         Financial Income (Expenses), Net (Tables)           HTML     47K 
51: R35         Geographic Information and Major Customer Data      HTML     50K 
                (Tables)                                                         
52: R36         General - Narrative (Details)                       HTML     28K 
53: R37         Significant Accounting Policies - Cash, Cash        HTML     67K 
                Equivalents and Short-term Deposits (Details)                    
54: R38         Significant Accounting Policies - Narrative         HTML    116K 
                (Details)                                                        
55: R39         Significant Accounting Policies - Property and      HTML     35K 
                Equipment, Schedule of Depreciation Annual Rates                 
                and Estimated Useful Lives of Assets (Details)                   
56: R40         Significant Accounting Policies - Derivative        HTML     54K 
                Instruments Measured at Fair Value (Details)                     
57: R41         Prepaid Expenses and Other Current Assets -         HTML     40K 
                Schedule of Prepaid Expenses and Other Current                   
                Assets (Details)                                                 
58: R42         Property and Equipment, Net - Schedule of Property  HTML     42K 
                and Equipment, Net (Details)                                     
59: R43         Property and Equipment, Net - Narrative (Details)   HTML     29K 
60: R44         Accrued Expenses and Other Short Term Liabilities   HTML     41K 
                - Schedule of Accrued Expenses and Other Short                   
                Term Liabilities (Details)                                       
61: R45         Leases - Summary of Right-of-Use Assets and Lease   HTML     34K 
                Liabilities (Details)                                            
62: R46         Leases - Minimum Lease Payments for Right-of-Use    HTML     45K 
                Assets (Details)                                                 
63: R47         Leases - Narrative (Details)                        HTML     33K 
64: R48         Leases - Summary of Weighted Average Remaining      HTML     31K 
                Lease Terms and Discount Rates (Details)                         
65: R49         Convertible Senior Notes and Capped Call            HTML     78K 
                Transactions - Narrative (Details)                               
66: R50         Convertible Senior Notes and Capped Call            HTML     42K 
                Transactions - Schedule of Convertible Notes                     
                (Details)                                                        
67: R51         Convertible Senior Notes and Capped Call            HTML     48K 
                Transactions - Schedule of Interest Expense                      
                (Details)                                                        
68: R52         Goodwill and Intangible Assets - Cost and           HTML     38K 
                Amortization of Intangible Assets (Details)                      
69: R53         Goodwill and Intangible Assets - Narrative          HTML     29K 
                (Details)                                                        
70: R54         Goodwill and Intangible Assets - Estimated Future   HTML     31K 
                Amortization Expense (Details)                                   
71: R55         Fair Value Measurements - Assets and Liabilities    HTML    118K 
                Measured at Fair Value (Details)                                 
72: R56         Stockholders' Equity - Composition of Common Stock  HTML     36K 
                (Details)                                                        
73: R57         Stockholders' Equity - Narrative (Details)          HTML    118K 
74: R58         Stockholders' Equity - Stock Options Activities     HTML     66K 
                (Details)                                                        
75: R59         Stockholders' Equity - Options Outstanding          HTML     70K 
                Separated into Range of Exercise Price (Details)                 
76: R60         Stockholders' Equity - Outstanding Options Granted  HTML     63K 
                to Consultants for Sales and Pre-marketing                       
                Services (Details)                                               
77: R61         Stockholders' Equity - Restricted Stock Unit        HTML     51K 
                Activity (Details)                                               
78: R62         Stockholders' Equity - Non-cash Stock-based         HTML     46K 
                Compensation Expense (Details)                                   
79: R63         Stockholders' Equity - Share Repurchase Program     HTML     37K 
                (Details)                                                        
80: R64         Income Taxes - Narrative (Details)                  HTML     60K 
81: R65         Income Taxes - Schedule of Profit (Loss) Before     HTML     36K 
                Taxes on Income (Details)                                        
82: R66         Income Taxes - Schedule of Income Taxes on Loss     HTML     55K 
                (Details)                                                        
83: R67         Income Taxes - Schedule of Deferred Tax Assets and  HTML     63K 
                Deferred Tax Liabilities (Details)                               
84: R68         Income Taxes - Schedule of Reconciliation of        HTML     59K 
                Theoretical Tax Expense and Actual Tax Expense                   
                (Benefit) (Details)                                              
85: R69         Income Taxes - Reconciliation of Beginning and      HTML     36K 
                Ending Amount of Unrecognized Tax Benefits                       
                (Details)                                                        
86: R70         Financial Income (Expenses), Net - Summary of       HTML     48K 
                Financial Income and Expenses (Details)                          
87: R71         Geographic Information and Major Customer Data -    HTML     36K 
                Narrative (Details)                                              
88: R72         Geographic Information and Major Customer Data -    HTML     38K 
                Revenues Within Geographical Areas (Details)                     
89: R73         Geographic Information and Major Customer Data -    HTML     37K 
                Long-lived Assets by Geographic Region (Details)                 
91: XML         IDEA XML File -- Filing Summary                      XML    163K 
94: XML         XBRL Instance -- vrns-20231231_htm                   XML   2.10M 
90: EXCEL       IDEA Workbook of Financial Report Info              XLSX    166K 
13: EX-101.CAL  XBRL Calculations -- vrns-20231231_cal               XML    255K 
14: EX-101.DEF  XBRL Definitions -- vrns-20231231_def                XML    695K 
15: EX-101.LAB  XBRL Labels -- vrns-20231231_lab                     XML   1.80M 
16: EX-101.PRE  XBRL Presentations -- vrns-20231231_pre              XML   1.07M 
12: EX-101.SCH  XBRL Schema -- vrns-20231231                         XSD    166K 
92: JSON        XBRL Instance as JSON Data -- MetaLinks              580±   866K 
93: ZIP         XBRL Zipped Folder -- 0001628280-24-003498-xbrl      Zip    664K 


‘EX-101.DEF’   —   XBRL Definitions — vrns-20231231_def


This Exhibit is an XBRL File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with the Workiva Platform -->
<!-- Copyright 2024 Workiva -->
<!-- r:42f1c916-00ab-4477-8e17-65aa2c0feb4e,g:8f6c808c-19b2-4a63-a661-f4c6333d29b2 -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
<link:roleRef roleURI="http://varonis.com/role/ConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="vrns-20231231.xsd#ConsolidatedStatementsofOperations"/>
<link:definitionLink xlink:role="http://varonis.com/role/ConsolidatedStatementsofOperations" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_861dfa7b-db3f-4e1d-afb9-05136f9256d7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_StatementTable_861dfa7b-db3f-4e1d-afb9-05136f9256d7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_5a2841b6-1549-42fd-8f4f-5fd4be918b64" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_861dfa7b-db3f-4e1d-afb9-05136f9256d7" xlink:to="loc_srt_ProductOrServiceAxis_5a2841b6-1549-42fd-8f4f-5fd4be918b64" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_5a2841b6-1549-42fd-8f4f-5fd4be918b64_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_5a2841b6-1549-42fd-8f4f-5fd4be918b64" xlink:to="loc_srt_ProductsAndServicesDomain_5a2841b6-1549-42fd-8f4f-5fd4be918b64_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_aa9bf737-8f36-4c38-a638-15dddeb5ceba" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_5a2841b6-1549-42fd-8f4f-5fd4be918b64" xlink:to="loc_srt_ProductsAndServicesDomain_aa9bf737-8f36-4c38-a638-15dddeb5ceba" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubscriptionAndCirculationMember_b3737e60-4cfe-4a74-8911-508760512a4f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubscriptionAndCirculationMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_aa9bf737-8f36-4c38-a638-15dddeb5ceba" xlink:to="loc_us-gaap_SubscriptionAndCirculationMember_b3737e60-4cfe-4a74-8911-508760512a4f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaintenanceMember_43d73d07-3ea8-45b2-bd44-a9272a103a7b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MaintenanceMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_aa9bf737-8f36-4c38-a638-15dddeb5ceba" xlink:to="loc_us-gaap_MaintenanceMember_43d73d07-3ea8-45b2-bd44-a9272a103a7b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_2329590c-9692-4790-938f-c01e85bfd5ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenuesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_RevenuesAbstract_2329590c-9692-4790-938f-c01e85bfd5ec" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_f5040d07-97f1-4fc0-8612-1c4d877bcbfe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_2329590c-9692-4790-938f-c01e85bfd5ec" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_f5040d07-97f1-4fc0-8612-1c4d877bcbfe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_e0833bb7-8a9a-4647-9aaa-f65a79edfcf3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfRevenue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_2329590c-9692-4790-938f-c01e85bfd5ec" xlink:to="loc_us-gaap_CostOfRevenue_e0833bb7-8a9a-4647-9aaa-f65a79edfcf3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_1678a60e-7479-4fbc-89a1-2da77dc8fb3b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GrossProfit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_2329590c-9692-4790-938f-c01e85bfd5ec" xlink:to="loc_us-gaap_GrossProfit_1678a60e-7479-4fbc-89a1-2da77dc8fb3b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingCostsAndExpensesAbstract_764bc41d-ddfb-4e88-b3fc-f82ca1688439" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingCostsAndExpensesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_OperatingCostsAndExpensesAbstract_764bc41d-ddfb-4e88-b3fc-f82ca1688439" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_5748a3f2-28b4-4e64-9596-8f1271b1ed65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_764bc41d-ddfb-4e88-b3fc-f82ca1688439" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_5748a3f2-28b4-4e64-9596-8f1271b1ed65" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_3eb39591-badb-4ed9-a4f3-5bdad8e1ab72" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingAndMarketingExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_764bc41d-ddfb-4e88-b3fc-f82ca1688439" xlink:to="loc_us-gaap_SellingAndMarketingExpense_3eb39591-badb-4ed9-a4f3-5bdad8e1ab72" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_d603dcdf-eef4-429e-86d7-c9907c9678a8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_764bc41d-ddfb-4e88-b3fc-f82ca1688439" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_d603dcdf-eef4-429e-86d7-c9907c9678a8" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_58ccc0d1-19b6-45f2-9bca-d06c86bdf115" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingExpenses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingCostsAndExpensesAbstract_764bc41d-ddfb-4e88-b3fc-f82ca1688439" xlink:to="loc_us-gaap_OperatingExpenses_58ccc0d1-19b6-45f2-9bca-d06c86bdf115" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_ccf5308f-aec1-4206-afe8-9b7fb1460235" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_OperatingIncomeLoss_ccf5308f-aec1-4206-afe8-9b7fb1460235" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_08a4a1ac-7b11-4402-978e-966306a9c538" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonoperatingIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_08a4a1ac-7b11-4402-978e-966306a9c538" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_86bcdbb0-a29b-43ee-b414-ae8ae765c530" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_86bcdbb0-a29b-43ee-b414-ae8ae765c530" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_467c1018-ddc8-4f16-9e6b-7ebabfd81ecd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_467c1018-ddc8-4f16-9e6b-7ebabfd81ecd" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_4f13746d-6f74-45cd-932a-65040d140c8d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_NetIncomeLoss_4f13746d-6f74-45cd-932a-65040d140c8d" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_c1e433ca-dca5-4823-86e7-2d290faeb640" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareBasic"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_EarningsPerShareBasic_c1e433ca-dca5-4823-86e7-2d290faeb640" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_c51338f2-9704-4c2e-abca-1dede772cc29" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EarningsPerShareDiluted"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_EarningsPerShareDiluted_c51338f2-9704-4c2e-abca-1dede772cc29" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_d4b7403b-143e-4457-a8db-47e9fd7a7aeb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_d4b7403b-143e-4457-a8db-47e9fd7a7aeb" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_e412845f-76ff-4f97-b48f-daef7925f2f7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_f919bd8a-7d9d-4a85-ba86-684a37ff4250" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_e412845f-76ff-4f97-b48f-daef7925f2f7" xlink:type="arc" order="10"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="simple" xlink:href="vrns-20231231.xsd#ConsolidatedStatementsofChangesinStockholdersEquity"/>
<link:definitionLink xlink:role="http://varonis.com/role/ConsolidatedStatementsofChangesinStockholdersEquity" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_d88466ab-e0ff-4315-9f91-980fb79bd069" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_badc459b-30a7-4355-a330-b52946140d41" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_d88466ab-e0ff-4315-9f91-980fb79bd069" xlink:to="loc_us-gaap_StatementTable_badc459b-30a7-4355-a330-b52946140d41" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_8343b5d2-b81a-49bf-b389-58ca8794c5bb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_badc459b-30a7-4355-a330-b52946140d41" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_8343b5d2-b81a-49bf-b389-58ca8794c5bb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_8343b5d2-b81a-49bf-b389-58ca8794c5bb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_8343b5d2-b81a-49bf-b389-58ca8794c5bb" xlink:to="loc_us-gaap_EquityComponentDomain_8343b5d2-b81a-49bf-b389-58ca8794c5bb_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_893a6adb-aa77-444b-9309-73d2c577f36f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_8343b5d2-b81a-49bf-b389-58ca8794c5bb" xlink:to="loc_us-gaap_EquityComponentDomain_893a6adb-aa77-444b-9309-73d2c577f36f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_3190cf49-c422-46df-9db6-7500a2eafe4c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_893a6adb-aa77-444b-9309-73d2c577f36f" xlink:to="loc_us-gaap_CommonStockMember_3190cf49-c422-46df-9db6-7500a2eafe4c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_fb236e04-0a85-4a1e-81e5-b9c38e4fdc18" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_893a6adb-aa77-444b-9309-73d2c577f36f" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_fb236e04-0a85-4a1e-81e5-b9c38e4fdc18" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_535ad924-7959-4bdb-bdea-a856e93563f8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_893a6adb-aa77-444b-9309-73d2c577f36f" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_535ad924-7959-4bdb-bdea-a856e93563f8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_0e050b4a-8806-4161-8d74-feba21ce85da" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_893a6adb-aa77-444b-9309-73d2c577f36f" xlink:to="loc_us-gaap_RetainedEarningsMember_0e050b4a-8806-4161-8d74-feba21ce85da" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2d89432a-e9c2-447b-bb39-4a09082dcd69" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_badc459b-30a7-4355-a330-b52946140d41" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2d89432a-e9c2-447b-bb39-4a09082dcd69" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_2d89432a-e9c2-447b-bb39-4a09082dcd69_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2d89432a-e9c2-447b-bb39-4a09082dcd69" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_2d89432a-e9c2-447b-bb39-4a09082dcd69_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_2c6673fa-cf40-4408-a912-3914fe547061" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_2d89432a-e9c2-447b-bb39-4a09082dcd69" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_2c6673fa-cf40-4408-a912-3914fe547061" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_1db9baac-bd3f-4be9-a95b-20b7b75a704b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_2c6673fa-cf40-4408-a912-3914fe547061" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_1db9baac-bd3f-4be9-a95b-20b7b75a704b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d88466ab-e0ff-4315-9f91-980fb79bd069" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_3425efd1-3069-4d07-9d3b-95c5b204dc74" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_SharesOutstanding_3425efd1-3069-4d07-9d3b-95c5b204dc74" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_7185feff-7f0c-45c1-9fd7-5e0bba53f7d4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_StockholdersEquity_7185feff-7f0c-45c1-9fd7-5e0bba53f7d4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_15082c15-e78d-46bc-8bd2-8b67b80021c3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_15082c15-e78d-46bc-8bd2-8b67b80021c3" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_e5939e9c-4e11-4fd1-ad3c-cb01b8b72054" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_e5939e9c-4e11-4fd1-ad3c-cb01b8b72054" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_eea3701a-2fa5-4aef-a73c-8934513e2356" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_eea3701a-2fa5-4aef-a73c-8934513e2356" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_6470c4b8-bf24-4639-b9fa-8ea024d8ff1e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_6470c4b8-bf24-4639-b9fa-8ea024d8ff1e" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_fc34058e-a56a-459c-bc37-65b34dabfd13" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_fc34058e-a56a-459c-bc37-65b34dabfd13" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_bdfd6b77-6db4-4d96-aeed-515348a98a70" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_bdfd6b77-6db4-4d96-aeed-515348a98a70" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodShares_670c750c-11f4-4e78-bd85-065a9b690006" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchasedDuringPeriodShares"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodShares_670c750c-11f4-4e78-bd85-065a9b690006" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedDuringPeriodValue_8e516ed8-cde4-4010-b3a9-52ce090cd005" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockRepurchasedDuringPeriodValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_StockRepurchasedDuringPeriodValue_8e516ed8-cde4-4010-b3a9-52ce090cd005" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_d56e3e0e-f9ba-4f8d-8c89-bf27f7dc5b88" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_d56e3e0e-f9ba-4f8d-8c89-bf27f7dc5b88" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_c2fc950a-e867-4ad5-934f-a17952151a9f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_c2fc950a-e867-4ad5-934f-a17952151a9f" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_4d3598ed-d342-4005-9a6d-9e28adce9943" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_2ceadc47-171c-42c3-86bc-16680f0be655" xlink:to="loc_us-gaap_NetIncomeLoss_4d3598ed-d342-4005-9a6d-9e28adce9943" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesOutstanding_bae759d5-3a53-46c0-9d7d-d7ccd043a181" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesOutstanding"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_1d205914-23f9-47f6-be62-cb1fd5772dd6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdateExtensibleList_34788fca-6b8c-4039-a8ee-55a0287b07c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountingStandardsUpdateExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d88466ab-e0ff-4315-9f91-980fb79bd069" xlink:to="loc_us-gaap_AccountingStandardsUpdateExtensibleList_34788fca-6b8c-4039-a8ee-55a0287b07c8" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/SignificantAccountingPoliciesCashCashEquivalentsandShorttermDepositsDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#SignificantAccountingPoliciesCashCashEquivalentsandShorttermDepositsDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/SignificantAccountingPoliciesCashCashEquivalentsandShorttermDepositsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesLineItems_4e4d53c3-61cd-4ebc-aaa6-edb6a64a814d" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesTable_35fac66b-3fe3-4959-a24e-29b972c1c2a1" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_4e4d53c3-61cd-4ebc-aaa6-edb6a64a814d" xlink:to="loc_vrns_SignificantAccountingPoliciesTable_35fac66b-3fe3-4959-a24e-29b972c1c2a1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_2453fc0d-76d7-43b2-bdf7-1d1d55ba5683" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_35fac66b-3fe3-4959-a24e-29b972c1c2a1" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_2453fc0d-76d7-43b2-bdf7-1d1d55ba5683" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_2453fc0d-76d7-43b2-bdf7-1d1d55ba5683_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_2453fc0d-76d7-43b2-bdf7-1d1d55ba5683" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_2453fc0d-76d7-43b2-bdf7-1d1d55ba5683_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_a8e62f62-cd96-4ec8-be16-458ff50e512c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_2453fc0d-76d7-43b2-bdf7-1d1d55ba5683" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_a8e62f62-cd96-4ec8-be16-458ff50e512c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_7f4e2e6d-b1e5-43fe-a106-9eb337962505" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MoneyMarketFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_a8e62f62-cd96-4ec8-be16-458ff50e512c" xlink:to="loc_us-gaap_MoneyMarketFundsMember_7f4e2e6d-b1e5-43fe-a106-9eb337962505" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_fa28c4e8-b85b-4dce-a99e-4e2b23473779" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_35fac66b-3fe3-4959-a24e-29b972c1c2a1" xlink:to="loc_us-gaap_FinancialInstrumentAxis_fa28c4e8-b85b-4dce-a99e-4e2b23473779" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fa28c4e8-b85b-4dce-a99e-4e2b23473779_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_fa28c4e8-b85b-4dce-a99e-4e2b23473779" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_fa28c4e8-b85b-4dce-a99e-4e2b23473779_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2d83d1b6-3fbc-426c-8974-be27ccadd74c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_fa28c4e8-b85b-4dce-a99e-4e2b23473779" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2d83d1b6-3fbc-426c-8974-be27ccadd74c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesMember_5f8f74fe-38af-4b91-8aa2-e86b43207044" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2d83d1b6-3fbc-426c-8974-be27ccadd74c" xlink:to="loc_us-gaap_DebtSecuritiesMember_5f8f74fe-38af-4b91-8aa2-e86b43207044" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_USTreasurySecuritiesIncludedInCashAndCashEquivalentsMember_9985e82f-4916-408f-8948-9ec10978cfba" xlink:href="vrns-20231231.xsd#vrns_USTreasurySecuritiesIncludedInCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesMember_5f8f74fe-38af-4b91-8aa2-e86b43207044" xlink:to="loc_vrns_USTreasurySecuritiesIncludedInCashAndCashEquivalentsMember_9985e82f-4916-408f-8948-9ec10978cfba" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_277a38c0-e41e-4551-ab75-cc91d30d8854" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesMember_5f8f74fe-38af-4b91-8aa2-e86b43207044" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_277a38c0-e41e-4551-ab75-cc91d30d8854" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_4322981e-e45f-4f77-8b20-f158e4305c31" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommercialPaperMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesMember_5f8f74fe-38af-4b91-8aa2-e86b43207044" xlink:to="loc_us-gaap_CommercialPaperMember_4322981e-e45f-4f77-8b20-f158e4305c31" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_c1eb37aa-0051-468f-8c14-3996234997c4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateBondSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtSecuritiesMember_5f8f74fe-38af-4b91-8aa2-e86b43207044" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_c1eb37aa-0051-468f-8c14-3996234997c4" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermInvestmentsMember_bf48561c-ee23-416e-babb-8a07a61736b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShortTermInvestmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_2d83d1b6-3fbc-426c-8974-be27ccadd74c" xlink:to="loc_us-gaap_ShortTermInvestmentsMember_bf48561c-ee23-416e-babb-8a07a61736b9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TermBankDepositsMember_3bf4f013-ca27-4702-a0cc-b2879a095cc1" xlink:href="vrns-20231231.xsd#vrns_TermBankDepositsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermInvestmentsMember_bf48561c-ee23-416e-babb-8a07a61736b9" xlink:to="loc_vrns_TermBankDepositsMember_3bf4f013-ca27-4702-a0cc-b2879a095cc1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_8dee01c5-eea0-483f-abf3-3441b54236bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_35fac66b-3fe3-4959-a24e-29b972c1c2a1" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_8dee01c5-eea0-483f-abf3-3441b54236bd" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_8dee01c5-eea0-483f-abf3-3441b54236bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_8dee01c5-eea0-483f-abf3-3441b54236bd" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_8dee01c5-eea0-483f-abf3-3441b54236bd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_048c8938-332c-4f57-a746-564bfca17c50" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_8dee01c5-eea0-483f-abf3-3441b54236bd" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_048c8938-332c-4f57-a746-564bfca17c50" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_MarketableSecuritiesNoncurrentMember_eace5ef1-5a62-4f49-b046-d8ab4e7a80a6" xlink:href="vrns-20231231.xsd#vrns_MarketableSecuritiesNoncurrentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_048c8938-332c-4f57-a746-564bfca17c50" xlink:to="loc_vrns_MarketableSecuritiesNoncurrentMember_eace5ef1-5a62-4f49-b046-d8ab4e7a80a6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_f32f332c-e744-4e53-aaae-8dab2e9e164f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_4e4d53c3-61cd-4ebc-aaa6-edb6a64a814d" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_f32f332c-e744-4e53-aaae-8dab2e9e164f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_8b21fb20-c2bc-441c-9a12-5db61e6ec1ba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_4e4d53c3-61cd-4ebc-aaa6-edb6a64a814d" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss_8b21fb20-c2bc-441c-9a12-5db61e6ec1ba" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_646cb7ad-a297-4741-9ec0-c50cbd34eca6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_4e4d53c3-61cd-4ebc-aaa6-edb6a64a814d" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_646cb7ad-a297-4741-9ec0-c50cbd34eca6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_02e35970-9c49-459a-8f5a-72ab792b6b45" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_4e4d53c3-61cd-4ebc-aaa6-edb6a64a814d" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_02e35970-9c49-459a-8f5a-72ab792b6b45" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_ae3c5942-79f8-4ee0-bcdc-67173ac1fe57" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_4e4d53c3-61cd-4ebc-aaa6-edb6a64a814d" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest_ae3c5942-79f8-4ee0-bcdc-67173ac1fe57" xlink:type="arc" order="4"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/SignificantAccountingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#SignificantAccountingPoliciesNarrativeDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/SignificantAccountingPoliciesNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d4763208-0cd3-44cf-b11a-59757ef24bab_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:to="loc_srt_ProductsAndServicesDomain_d4763208-0cd3-44cf-b11a-59757ef24bab_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a9503640-7fb7-40dd-b381-6be73c36a26c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:to="loc_srt_ProductsAndServicesDomain_a9503640-7fb7-40dd-b381-6be73c36a26c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaintenanceMember_f89b1bc1-c395-49b8-abe0-52e163829d68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MaintenanceMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a9503640-7fb7-40dd-b381-6be73c36a26c" xlink:to="loc_us-gaap_MaintenanceMember_f89b1bc1-c395-49b8-abe0-52e163829d68" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_24451e36-9838-459b-98f9-a133b805e053_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:to="loc_srt_RangeMember_24451e36-9838-459b-98f9-a133b805e053_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:to="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_98dbaae5-8966-4e6c-88b0-0d51bd4092b4" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:to="loc_srt_MinimumMember_98dbaae5-8966-4e6c-88b0-0d51bd4092b4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_65adf24c-a74d-4be8-8a5f-ebe8e2a4bc2f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:to="loc_srt_MaximumMember_65adf24c-a74d-4be8-8a5f-ebe8e2a4bc2f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CurrencyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_c419c487-b041-4c96-8edf-0fba33329cf3_default" xlink:href="https://xbrl.sec.gov/currency/2023/currency-2023.xsd#currency_AllCurrenciesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:to="loc_currency_AllCurrenciesDomain_c419c487-b041-4c96-8edf-0fba33329cf3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_3d36b796-5b06-464c-8fe6-5c5854fd9e46" xlink:href="https://xbrl.sec.gov/currency/2023/currency-2023.xsd#currency_AllCurrenciesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:to="loc_currency_AllCurrenciesDomain_3d36b796-5b06-464c-8fe6-5c5854fd9e46" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_currency_USD_2a21d452-c970-4d85-9db7-86b527585af8" xlink:href="https://xbrl.sec.gov/currency/2023/currency-2023.xsd#currency_USD"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_3d36b796-5b06-464c-8fe6-5c5854fd9e46" xlink:to="loc_currency_USD_2a21d452-c970-4d85-9db7-86b527585af8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_1ce3410e-5b92-4dda-8dda-e8d5de9904dc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_1ce3410e-5b92-4dda-8dda-e8d5de9904dc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_b0bfeda4-83bc-4374-abf4-d3db132acc58" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_b0bfeda4-83bc-4374-abf4-d3db132acc58" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_82764acb-4c81-4932-a9bc-9387a0ec93c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_b0bfeda4-83bc-4374-abf4-d3db132acc58" xlink:to="loc_us-gaap_ForeignExchangeContractMember_82764acb-4c81-4932-a9bc-9387a0ec93c5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_c9ebe29e-5af7-40e8-a180-984b931cd0a7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_c9ebe29e-5af7-40e8-a180-984b931cd0a7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_e014ac74-786d-4c02-94b8-8f55c709c08b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_e014ac74-786d-4c02-94b8-8f55c709c08b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DeferredSalaryArrangementMember_3c07db9c-b9fd-4b41-9601-6c2a0ef6ebd3" xlink:href="vrns-20231231.xsd#vrns_DeferredSalaryArrangementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_e014ac74-786d-4c02-94b8-8f55c709c08b" xlink:to="loc_vrns_DeferredSalaryArrangementMember_3c07db9c-b9fd-4b41-9601-6c2a0ef6ebd3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_b422f23d-7392-4902-b5ea-3ebe147e82ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_b422f23d-7392-4902-b5ea-3ebe147e82ca_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_e16ae4ce-a475-4a9e-9445-997bec5817e9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:to="loc_us-gaap_DomesticPlanMember_e16ae4ce-a475-4a9e-9445-997bec5817e9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_country_US_93ebcb0c-86d0-4b80-ab2d-e438032a1ee4" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_e16ae4ce-a475-4a9e-9445-997bec5817e9" xlink:to="loc_country_US_93ebcb0c-86d0-4b80-ab2d-e438032a1ee4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_2a447338-02c4-473c-9f7e-1487d39b4a8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:to="loc_us-gaap_ForeignPlanMember_2a447338-02c4-473c-9f7e-1487d39b4a8e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_country_IL_75f5db8f-283b-46b6-bdab-787d9498c479" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_IL"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignPlanMember_2a447338-02c4-473c-9f7e-1487d39b4a8e" xlink:to="loc_country_IL_75f5db8f-283b-46b6-bdab-787d9498c479" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameDomain_65ee0fe9-15b8-4891-b4eb-066e908701a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:to="loc_us-gaap_RetirementPlanNameDomain_65ee0fe9-15b8-4891-b4eb-066e908701a1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameDomain_96bc3916-b5b4-4335-86e2-318f7e3badf6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:to="loc_us-gaap_RetirementPlanNameDomain_96bc3916-b5b4-4335-86e2-318f7e3badf6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_VSILPlanMember_8eed3fac-4dab-4ad8-ba92-b2d6b55691fb" xlink:href="vrns-20231231.xsd#vrns_VSILPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_96bc3916-b5b4-4335-86e2-318f7e3badf6" xlink:to="loc_vrns_VSILPlanMember_8eed3fac-4dab-4ad8-ba92-b2d6b55691fb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_a1594e51-8f9e-40e4-b347-4a995c54bb0c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_a1594e51-8f9e-40e4-b347-4a995c54bb0c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_10c1c467-1d16-4ec1-aa12-621e489f51e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_10c1c467-1d16-4ec1-aa12-621e489f51e8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_c66eaa82-5ea9-4103-aec1-829f8ae929a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_10c1c467-1d16-4ec1-aa12-621e489f51e8" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_c66eaa82-5ea9-4103-aec1-829f8ae929a0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_03a95141-4b06-438b-980f-717e47ebe65d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_03a95141-4b06-438b-980f-717e47ebe65d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_07425d71-7db3-4a5a-abfd-cb0ec394a0fc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_07425d71-7db3-4a5a-abfd-cb0ec394a0fc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_4eea1e53-ced8-48e0-8203-05b0ade2a902" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConvertibleDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_07425d71-7db3-4a5a-abfd-cb0ec394a0fc" xlink:to="loc_us-gaap_ConvertibleDebtMember_4eea1e53-ced8-48e0-8203-05b0ade2a902" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_cc67dec3-0110-4431-ab83-06185e95ae8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_cc67dec3-0110-4431-ab83-06185e95ae8b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_a1fdd355-89c7-41ac-aed1-49fd7d21d870" xlink:href="vrns-20231231.xsd#vrns_TwoThousandAndTwentyFiveSeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_cc67dec3-0110-4431-ab83-06185e95ae8b" xlink:to="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_a1fdd355-89c7-41ac-aed1-49fd7d21d870" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_1f588add-603a-4085-a31c-5ffbdd416660_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_1f588add-603a-4085-a31c-5ffbdd416660_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RestrictedStockUnitsAndStockOptionsMember_4207fad4-1807-4d49-b043-f47dabc50a4b" xlink:href="vrns-20231231.xsd#vrns_RestrictedStockUnitsAndStockOptionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:to="loc_vrns_RestrictedStockUnitsAndStockOptionsMember_4207fad4-1807-4d49-b043-f47dabc50a4b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtSecuritiesMember_ebd58792-791e-446a-9e3f-9a612fd7116d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConvertibleDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:to="loc_us-gaap_ConvertibleDebtSecuritiesMember_ebd58792-791e-446a-9e3f-9a612fd7116d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_e9bd2a4d-74f0-4585-a0fb-71ee1e0e1e3d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_e9bd2a4d-74f0-4585-a0fb-71ee1e0e1e3d" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentInterestRate_477c831e-b612-405b-a3e1-fa34265f7948" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_InvestmentInterestRate_477c831e-b612-405b-a3e1-fa34265f7948" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_b1f19107-aa63-413b-91f4-98030afd1323" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfReportableSegments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_NumberOfReportableSegments_b1f19107-aa63-413b-91f4-98030afd1323" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportingUnits_75c23bac-1350-4a10-a0ac-56e3cdc31cd3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfReportingUnits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_NumberOfReportingUnits_75c23bac-1350-4a10-a0ac-56e3cdc31cd3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_9f131103-76ab-4e05-905e-2c692bbdc1d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_9f131103-76ab-4e05-905e-2c692bbdc1d1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_cad3f37c-346a-41d3-ae3d-d2e8a517cbab" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenuePerformanceObligationDescriptionOfTiming"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_cad3f37c-346a-41d3-ae3d-d2e8a517cbab" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_42a07170-6d04-4103-aa72-ee1e5ec49e17" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_42a07170-6d04-4103-aa72-ee1e5ec49e17" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_846f546f-f362-4917-a6c0-ecc8d635f154" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_846f546f-f362-4917-a6c0-ecc8d635f154" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_e047dae6-ae61-43fb-8fc5-db334043c575" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_e047dae6-ae61-43fb-8fc5-db334043c575" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_29526e4a-86d0-4030-8c37-47d64df31943" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_29526e4a-86d0-4030-8c37-47d64df31943" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_a8c88ef4-1e76-401d-8772-2d1ed6430cad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CapitalizedContractCostAmortizationPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_a8c88ef4-1e76-401d-8772-2d1ed6430cad" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_5fb39781-651e-43c9-bc4c-51ff59f8f323" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_5fb39781-651e-43c9-bc4c-51ff59f8f323" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_5191b037-a38f-4c4e-9318-972c29e95550" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_5191b037-a38f-4c4e-9318-972c29e95550" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_55b36367-2bfa-4912-ad46-a2ffa1a00023" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_55b36367-2bfa-4912-ad46-a2ffa1a00023" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_ce4e44e4-8156-4101-97e0-3cfb676467bb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_ce4e44e4-8156-4101-97e0-3cfb676467bb" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfBasePay_fdd61275-d035-4530-9e7b-6d41a1cf2c55" xlink:href="vrns-20231231.xsd#vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfBasePay"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfBasePay_fdd61275-d035-4530-9e7b-6d41a1cf2c55" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfParticipantsContribution_f2170230-b0f3-4ff0-9f07-80214347dd48" xlink:href="vrns-20231231.xsd#vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfParticipantsContribution"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfParticipantsContribution_f2170230-b0f3-4ff0-9f07-80214347dd48" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DefinedContributionPlanContributionsPercentageOfParticipantsBasePay_23f12567-ef87-41db-8dfb-fbee146891bf" xlink:href="vrns-20231231.xsd#vrns_DefinedContributionPlanContributionsPercentageOfParticipantsBasePay"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DefinedContributionPlanContributionsPercentageOfParticipantsBasePay_23f12567-ef87-41db-8dfb-fbee146891bf" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_ParticipantMatchingContributionPercentageOfBaseRemuneration_b32066fa-0b82-4ff1-85bb-dc850e81982b" xlink:href="vrns-20231231.xsd#vrns_ParticipantMatchingContributionPercentageOfBaseRemuneration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_ParticipantMatchingContributionPercentageOfBaseRemuneration_b32066fa-0b82-4ff1-85bb-dc850e81982b" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_bdd4e9c6-13f5-4089-abd9-dba9c05a9868" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_bdd4e9c6-13f5-4089-abd9-dba9c05a9868" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SeveranceAndRetirementCosts_ac04ce43-e94e-493a-9029-1db9c88a268b" xlink:href="vrns-20231231.xsd#vrns_SeveranceAndRetirementCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_SeveranceAndRetirementCosts_ac04ce43-e94e-493a-9029-1db9c88a268b" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_584d7e76-d8a8-443c-9c10-08438b1a6f45" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RestructuringReserve_584d7e76-d8a8-443c-9c10-08438b1a6f45" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_345c141a-c33f-4b2e-aa4d-b7ae467ee4d6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_345c141a-c33f-4b2e-aa4d-b7ae467ee4d6" xlink:type="arc" order="21"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions_5f338f63-7fde-4428-a0a3-8ba7c7ba8e18" xlink:href="vrns-20231231.xsd#vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions_5f338f63-7fde-4428-a0a3-8ba7c7ba8e18" xlink:type="arc" order="22"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_6b94af99-1abb-4c2b-8f1d-ea6f0b800222" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_6b94af99-1abb-4c2b-8f1d-ea6f0b800222" xlink:type="arc" order="23"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/SignificantAccountingPoliciesNarrativeDetails_1" xlink:type="simple" xlink:href="vrns-20231231.xsd#SignificantAccountingPoliciesNarrativeDetails_1"/>
<link:definitionLink xlink:role="http://varonis.com/role/SignificantAccountingPoliciesNarrativeDetails_1" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d4763208-0cd3-44cf-b11a-59757ef24bab_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:to="loc_srt_ProductsAndServicesDomain_d4763208-0cd3-44cf-b11a-59757ef24bab_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_a9503640-7fb7-40dd-b381-6be73c36a26c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_d4763208-0cd3-44cf-b11a-59757ef24bab" xlink:to="loc_srt_ProductsAndServicesDomain_a9503640-7fb7-40dd-b381-6be73c36a26c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaintenanceMember_f89b1bc1-c395-49b8-abe0-52e163829d68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MaintenanceMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_a9503640-7fb7-40dd-b381-6be73c36a26c" xlink:to="loc_us-gaap_MaintenanceMember_f89b1bc1-c395-49b8-abe0-52e163829d68" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_24451e36-9838-459b-98f9-a133b805e053_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:to="loc_srt_RangeMember_24451e36-9838-459b-98f9-a133b805e053_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_24451e36-9838-459b-98f9-a133b805e053" xlink:to="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_98dbaae5-8966-4e6c-88b0-0d51bd4092b4" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:to="loc_srt_MinimumMember_98dbaae5-8966-4e6c-88b0-0d51bd4092b4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_65adf24c-a74d-4be8-8a5f-ebe8e2a4bc2f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8e1e27a8-58f3-4091-b9d2-44aa01ec5238" xlink:to="loc_srt_MaximumMember_65adf24c-a74d-4be8-8a5f-ebe8e2a4bc2f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CurrencyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_c419c487-b041-4c96-8edf-0fba33329cf3_default" xlink:href="https://xbrl.sec.gov/currency/2023/currency-2023.xsd#currency_AllCurrenciesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:to="loc_currency_AllCurrenciesDomain_c419c487-b041-4c96-8edf-0fba33329cf3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain_3d36b796-5b06-464c-8fe6-5c5854fd9e46" xlink:href="https://xbrl.sec.gov/currency/2023/currency-2023.xsd#currency_AllCurrenciesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CurrencyAxis_c419c487-b041-4c96-8edf-0fba33329cf3" xlink:to="loc_currency_AllCurrenciesDomain_3d36b796-5b06-464c-8fe6-5c5854fd9e46" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_currency_USD_2a21d452-c970-4d85-9db7-86b527585af8" xlink:href="https://xbrl.sec.gov/currency/2023/currency-2023.xsd#currency_USD"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_currency_AllCurrenciesDomain_3d36b796-5b06-464c-8fe6-5c5854fd9e46" xlink:to="loc_currency_USD_2a21d452-c970-4d85-9db7-86b527585af8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_1ce3410e-5b92-4dda-8dda-e8d5de9904dc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_1ce3410e-5b92-4dda-8dda-e8d5de9904dc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_b0bfeda4-83bc-4374-abf4-d3db132acc58" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_1ce3410e-5b92-4dda-8dda-e8d5de9904dc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_b0bfeda4-83bc-4374-abf4-d3db132acc58" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_82764acb-4c81-4932-a9bc-9387a0ec93c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_b0bfeda4-83bc-4374-abf4-d3db132acc58" xlink:to="loc_us-gaap_ForeignExchangeContractMember_82764acb-4c81-4932-a9bc-9387a0ec93c5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_c9ebe29e-5af7-40e8-a180-984b931cd0a7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_c9ebe29e-5af7-40e8-a180-984b931cd0a7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_e014ac74-786d-4c02-94b8-8f55c709c08b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c9ebe29e-5af7-40e8-a180-984b931cd0a7" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_e014ac74-786d-4c02-94b8-8f55c709c08b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DeferredSalaryArrangementMember_3c07db9c-b9fd-4b41-9601-6c2a0ef6ebd3" xlink:href="vrns-20231231.xsd#vrns_DeferredSalaryArrangementMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_e014ac74-786d-4c02-94b8-8f55c709c08b" xlink:to="loc_vrns_DeferredSalaryArrangementMember_3c07db9c-b9fd-4b41-9601-6c2a0ef6ebd3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_b422f23d-7392-4902-b5ea-3ebe147e82ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_b422f23d-7392-4902-b5ea-3ebe147e82ca_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_b422f23d-7392-4902-b5ea-3ebe147e82ca" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_e16ae4ce-a475-4a9e-9445-997bec5817e9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:to="loc_us-gaap_DomesticPlanMember_e16ae4ce-a475-4a9e-9445-997bec5817e9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_country_US_93ebcb0c-86d0-4b80-ab2d-e438032a1ee4" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_e16ae4ce-a475-4a9e-9445-997bec5817e9" xlink:to="loc_country_US_93ebcb0c-86d0-4b80-ab2d-e438032a1ee4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_2a447338-02c4-473c-9f7e-1487d39b4a8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_4aa413fd-fbc6-4842-9bee-ab9f8a3fcac4" xlink:to="loc_us-gaap_ForeignPlanMember_2a447338-02c4-473c-9f7e-1487d39b4a8e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_country_IL_75f5db8f-283b-46b6-bdab-787d9498c479" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_IL"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ForeignPlanMember_2a447338-02c4-473c-9f7e-1487d39b4a8e" xlink:to="loc_country_IL_75f5db8f-283b-46b6-bdab-787d9498c479" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameDomain_65ee0fe9-15b8-4891-b4eb-066e908701a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:to="loc_us-gaap_RetirementPlanNameDomain_65ee0fe9-15b8-4891-b4eb-066e908701a1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameDomain_96bc3916-b5b4-4335-86e2-318f7e3badf6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanNameAxis_65ee0fe9-15b8-4891-b4eb-066e908701a1" xlink:to="loc_us-gaap_RetirementPlanNameDomain_96bc3916-b5b4-4335-86e2-318f7e3badf6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_VSILPlanMember_8eed3fac-4dab-4ad8-ba92-b2d6b55691fb" xlink:href="vrns-20231231.xsd#vrns_VSILPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_96bc3916-b5b4-4335-86e2-318f7e3badf6" xlink:to="loc_vrns_VSILPlanMember_8eed3fac-4dab-4ad8-ba92-b2d6b55691fb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_a1594e51-8f9e-40e4-b347-4a995c54bb0c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_a1594e51-8f9e-40e4-b347-4a995c54bb0c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_10c1c467-1d16-4ec1-aa12-621e489f51e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_a1594e51-8f9e-40e4-b347-4a995c54bb0c" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_10c1c467-1d16-4ec1-aa12-621e489f51e8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_c66eaa82-5ea9-4103-aec1-829f8ae929a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_10c1c467-1d16-4ec1-aa12-621e489f51e8" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_c66eaa82-5ea9-4103-aec1-829f8ae929a0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_03a95141-4b06-438b-980f-717e47ebe65d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_03a95141-4b06-438b-980f-717e47ebe65d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_07425d71-7db3-4a5a-abfd-cb0ec394a0fc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_03a95141-4b06-438b-980f-717e47ebe65d" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_07425d71-7db3-4a5a-abfd-cb0ec394a0fc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_4eea1e53-ced8-48e0-8203-05b0ade2a902" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConvertibleDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_07425d71-7db3-4a5a-abfd-cb0ec394a0fc" xlink:to="loc_us-gaap_ConvertibleDebtMember_4eea1e53-ced8-48e0-8203-05b0ade2a902" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_cc67dec3-0110-4431-ab83-06185e95ae8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_b8ee4eb5-befd-4932-8d70-a48b8bffe9f9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_cc67dec3-0110-4431-ab83-06185e95ae8b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_a1fdd355-89c7-41ac-aed1-49fd7d21d870" xlink:href="vrns-20231231.xsd#vrns_TwoThousandAndTwentyFiveSeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_cc67dec3-0110-4431-ab83-06185e95ae8b" xlink:to="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_a1fdd355-89c7-41ac-aed1-49fd7d21d870" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_ca4b7ac4-adb8-49f1-85a5-d14c0d926a7c" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_1f588add-603a-4085-a31c-5ffbdd416660_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_1f588add-603a-4085-a31c-5ffbdd416660_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_1f588add-603a-4085-a31c-5ffbdd416660" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RestrictedStockUnitsAndStockOptionsMember_4207fad4-1807-4d49-b043-f47dabc50a4b" xlink:href="vrns-20231231.xsd#vrns_RestrictedStockUnitsAndStockOptionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:to="loc_vrns_RestrictedStockUnitsAndStockOptionsMember_4207fad4-1807-4d49-b043-f47dabc50a4b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtSecuritiesMember_ebd58792-791e-446a-9e3f-9a612fd7116d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConvertibleDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_0b7f2ac1-e2fe-4acd-9ffa-96053346d1e7" xlink:to="loc_us-gaap_ConvertibleDebtSecuritiesMember_ebd58792-791e-446a-9e3f-9a612fd7116d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentInterestRate_477c831e-b612-405b-a3e1-fa34265f7948" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_InvestmentInterestRate_477c831e-b612-405b-a3e1-fa34265f7948" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_b1f19107-aa63-413b-91f4-98030afd1323" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfReportableSegments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_NumberOfReportableSegments_b1f19107-aa63-413b-91f4-98030afd1323" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportingUnits_75c23bac-1350-4a10-a0ac-56e3cdc31cd3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfReportingUnits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_NumberOfReportingUnits_75c23bac-1350-4a10-a0ac-56e3cdc31cd3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_9f131103-76ab-4e05-905e-2c692bbdc1d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_9f131103-76ab-4e05-905e-2c692bbdc1d1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_cad3f37c-346a-41d3-ae3d-d2e8a517cbab" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenuePerformanceObligationDescriptionOfTiming"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenuePerformanceObligationDescriptionOfTiming_cad3f37c-346a-41d3-ae3d-d2e8a517cbab" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_42a07170-6d04-4103-aa72-ee1e5ec49e17" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_42a07170-6d04-4103-aa72-ee1e5ec49e17" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_846f546f-f362-4917-a6c0-ecc8d635f154" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligationPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationPercentage_846f546f-f362-4917-a6c0-ecc8d635f154" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_e047dae6-ae61-43fb-8fc5-db334043c575" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_e047dae6-ae61-43fb-8fc5-db334043c575" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_29526e4a-86d0-4030-8c37-47d64df31943" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_29526e4a-86d0-4030-8c37-47d64df31943" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_a8c88ef4-1e76-401d-8772-2d1ed6430cad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CapitalizedContractCostAmortizationPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_a8c88ef4-1e76-401d-8772-2d1ed6430cad" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_5fb39781-651e-43c9-bc4c-51ff59f8f323" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_5fb39781-651e-43c9-bc4c-51ff59f8f323" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_5191b037-a38f-4c4e-9318-972c29e95550" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_5191b037-a38f-4c4e-9318-972c29e95550" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_55b36367-2bfa-4912-ad46-a2ffa1a00023" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_55b36367-2bfa-4912-ad46-a2ffa1a00023" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_ce4e44e4-8156-4101-97e0-3cfb676467bb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_ce4e44e4-8156-4101-97e0-3cfb676467bb" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfBasePay_fdd61275-d035-4530-9e7b-6d41a1cf2c55" xlink:href="vrns-20231231.xsd#vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfBasePay"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfBasePay_fdd61275-d035-4530-9e7b-6d41a1cf2c55" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfParticipantsContribution_f2170230-b0f3-4ff0-9f07-80214347dd48" xlink:href="vrns-20231231.xsd#vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfParticipantsContribution"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DefinedContributionPlanEmployerMatchingContributionPercentOfParticipantsContribution_f2170230-b0f3-4ff0-9f07-80214347dd48" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DefinedContributionPlanContributionsPercentageOfParticipantsBasePay_23f12567-ef87-41db-8dfb-fbee146891bf" xlink:href="vrns-20231231.xsd#vrns_DefinedContributionPlanContributionsPercentageOfParticipantsBasePay"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DefinedContributionPlanContributionsPercentageOfParticipantsBasePay_23f12567-ef87-41db-8dfb-fbee146891bf" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_ParticipantMatchingContributionPercentageOfBaseRemuneration_b32066fa-0b82-4ff1-85bb-dc850e81982b" xlink:href="vrns-20231231.xsd#vrns_ParticipantMatchingContributionPercentageOfBaseRemuneration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_ParticipantMatchingContributionPercentageOfBaseRemuneration_b32066fa-0b82-4ff1-85bb-dc850e81982b" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_bdd4e9c6-13f5-4089-abd9-dba9c05a9868" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent_bdd4e9c6-13f5-4089-abd9-dba9c05a9868" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SeveranceAndRetirementCosts_ac04ce43-e94e-493a-9029-1db9c88a268b" xlink:href="vrns-20231231.xsd#vrns_SeveranceAndRetirementCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_SeveranceAndRetirementCosts_ac04ce43-e94e-493a-9029-1db9c88a268b" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_584d7e76-d8a8-443c-9c10-08438b1a6f45" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_RestructuringReserve_584d7e76-d8a8-443c-9c10-08438b1a6f45" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_345c141a-c33f-4b2e-aa4d-b7ae467ee4d6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_345c141a-c33f-4b2e-aa4d-b7ae467ee4d6" xlink:type="arc" order="21"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions_5f338f63-7fde-4428-a0a3-8ba7c7ba8e18" xlink:href="vrns-20231231.xsd#vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions_5f338f63-7fde-4428-a0a3-8ba7c7ba8e18" xlink:type="arc" order="22"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_6b94af99-1abb-4c2b-8f1d-ea6f0b800222" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_510ef272-f77b-45b4-9be3-1e2e5e9e60bf" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_6b94af99-1abb-4c2b-8f1d-ea6f0b800222" xlink:type="arc" order="23"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/SignificantAccountingPoliciesPropertyandEquipmentScheduleofDepreciationAnnualRatesandEstimatedUsefulLivesofAssetsDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#SignificantAccountingPoliciesPropertyandEquipmentScheduleofDepreciationAnnualRatesandEstimatedUsefulLivesofAssetsDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/SignificantAccountingPoliciesPropertyandEquipmentScheduleofDepreciationAnnualRatesandEstimatedUsefulLivesofAssetsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesLineItems_d84c89d8-a13a-4bc3-b9e3-06a0ddbeb793" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SignificantAccountingPoliciesTable_76fbc631-db5e-423a-9f2f-2c16cbd14207" xlink:href="vrns-20231231.xsd#vrns_SignificantAccountingPoliciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_d84c89d8-a13a-4bc3-b9e3-06a0ddbeb793" xlink:to="loc_vrns_SignificantAccountingPoliciesTable_76fbc631-db5e-423a-9f2f-2c16cbd14207" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_e019638d-8e3c-4861-a523-4fd17f588194" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_76fbc631-db5e-423a-9f2f-2c16cbd14207" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_e019638d-8e3c-4861-a523-4fd17f588194" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e019638d-8e3c-4861-a523-4fd17f588194_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_e019638d-8e3c-4861-a523-4fd17f588194" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e019638d-8e3c-4861-a523-4fd17f588194_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8835a7f5-c74b-478b-b81a-0fb4d6a951b8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_e019638d-8e3c-4861-a523-4fd17f588194" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8835a7f5-c74b-478b-b81a-0fb4d6a951b8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_4cd55e75-12ad-4f98-96fc-a986d446d9cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ComputerEquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8835a7f5-c74b-478b-b81a-0fb4d6a951b8" xlink:to="loc_us-gaap_ComputerEquipmentMember_4cd55e75-12ad-4f98-96fc-a986d446d9cb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_OfficeFurnitureAndEquipmentMember_b40fab58-51fd-4541-b6c4-be27b99a3df9" xlink:href="vrns-20231231.xsd#vrns_OfficeFurnitureAndEquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8835a7f5-c74b-478b-b81a-0fb4d6a951b8" xlink:to="loc_vrns_OfficeFurnitureAndEquipmentMember_b40fab58-51fd-4541-b6c4-be27b99a3df9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_ef2f3237-d329-49aa-9966-172573966bc2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LeaseholdImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8835a7f5-c74b-478b-b81a-0fb4d6a951b8" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_ef2f3237-d329-49aa-9966-172573966bc2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_d66db606-d084-49be-8bcf-d95fcadf9db2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_vrns_SignificantAccountingPoliciesTable_76fbc631-db5e-423a-9f2f-2c16cbd14207" xlink:to="loc_srt_RangeAxis_d66db606-d084-49be-8bcf-d95fcadf9db2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d66db606-d084-49be-8bcf-d95fcadf9db2_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_d66db606-d084-49be-8bcf-d95fcadf9db2" xlink:to="loc_srt_RangeMember_d66db606-d084-49be-8bcf-d95fcadf9db2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_010b900c-4608-4b4b-91db-6bef73a0a7f0" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_d66db606-d084-49be-8bcf-d95fcadf9db2" xlink:to="loc_srt_RangeMember_010b900c-4608-4b4b-91db-6bef73a0a7f0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_1e26beeb-c8b3-4db8-8b86-46be23ae401d" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_010b900c-4608-4b4b-91db-6bef73a0a7f0" xlink:to="loc_srt_MinimumMember_1e26beeb-c8b3-4db8-8b86-46be23ae401d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_95c703a6-ea9f-4770-91ef-33026e6e0595" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_010b900c-4608-4b4b-91db-6bef73a0a7f0" xlink:to="loc_srt_MaximumMember_95c703a6-ea9f-4770-91ef-33026e6e0595" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_PropertyPlantAndEquipmentDepreciationRate_d76a4698-5451-41c2-bcd2-f43228b8ebc0" xlink:href="vrns-20231231.xsd#vrns_PropertyPlantAndEquipmentDepreciationRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_vrns_SignificantAccountingPoliciesLineItems_d84c89d8-a13a-4bc3-b9e3-06a0ddbeb793" xlink:to="loc_vrns_PropertyPlantAndEquipmentDepreciationRate_d76a4698-5451-41c2-bcd2-f43228b8ebc0" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/SignificantAccountingPoliciesDerivativeInstrumentsMeasuredatFairValueDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#SignificantAccountingPoliciesDerivativeInstrumentsMeasuredatFairValueDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/SignificantAccountingPoliciesDerivativeInstrumentsMeasuredatFairValueDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_34dca6d8-4d7c-4bf3-a4a1-61eb9b4ecae9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_6491370b-f177-437a-8313-6735825914e2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_34dca6d8-4d7c-4bf3-a4a1-61eb9b4ecae9" xlink:to="loc_us-gaap_DerivativeTable_6491370b-f177-437a-8313-6735825914e2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_fdb818d2-e812-4a5f-acc1-393ed9361891" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_6491370b-f177-437a-8313-6735825914e2" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_fdb818d2-e812-4a5f-acc1-393ed9361891" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_fdb818d2-e812-4a5f-acc1-393ed9361891_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_fdb818d2-e812-4a5f-acc1-393ed9361891" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_fdb818d2-e812-4a5f-acc1-393ed9361891_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_4f6392b1-2fe4-448d-8c3a-406c0a1318dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_fdb818d2-e812-4a5f-acc1-393ed9361891" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_4f6392b1-2fe4-448d-8c3a-406c0a1318dc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_123ee881-b1da-43a2-8a1b-000bf6ad9808" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_4f6392b1-2fe4-448d-8c3a-406c0a1318dc" xlink:to="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_123ee881-b1da-43a2-8a1b-000bf6ad9808" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_AccruedExpensesAndOtherShortTermLiabilitiesMember_704b5c58-98bb-45d7-998a-9384e12ac075" xlink:href="vrns-20231231.xsd#vrns_AccruedExpensesAndOtherShortTermLiabilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_4f6392b1-2fe4-448d-8c3a-406c0a1318dc" xlink:to="loc_vrns_AccruedExpensesAndOtherShortTermLiabilitiesMember_704b5c58-98bb-45d7-998a-9384e12ac075" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentAssetsMember_1e338bc9-6645-4527-afa6-7c440c0c1150" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncurrentAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_4f6392b1-2fe4-448d-8c3a-406c0a1318dc" xlink:to="loc_us-gaap_OtherNoncurrentAssetsMember_1e338bc9-6645-4527-afa6-7c440c0c1150" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_2529dd46-04d5-408c-ba3e-c1b093d0684e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_4f6392b1-2fe4-448d-8c3a-406c0a1318dc" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_2529dd46-04d5-408c-ba3e-c1b093d0684e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_64059749-86e7-463e-a41b-2ce5340956a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_6491370b-f177-437a-8313-6735825914e2" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_64059749-86e7-463e-a41b-2ce5340956a1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_64059749-86e7-463e-a41b-2ce5340956a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_64059749-86e7-463e-a41b-2ce5340956a1" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_64059749-86e7-463e-a41b-2ce5340956a1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_76486eb0-6c4e-4a93-83a2-aeaa659f3438" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_64059749-86e7-463e-a41b-2ce5340956a1" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_76486eb0-6c4e-4a93-83a2-aeaa659f3438" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_7848c8b3-421c-488b-b3b2-c63e33528006" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_76486eb0-6c4e-4a93-83a2-aeaa659f3438" xlink:to="loc_us-gaap_ForeignExchangeContractMember_7848c8b3-421c-488b-b3b2-c63e33528006" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_c299fbd2-0cb6-4337-b786-1030604e8c66" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_6491370b-f177-437a-8313-6735825914e2" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_c299fbd2-0cb6-4337-b786-1030604e8c66" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_c299fbd2-0cb6-4337-b786-1030604e8c66_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_c299fbd2-0cb6-4337-b786-1030604e8c66" xlink:to="loc_us-gaap_HedgingRelationshipDomain_c299fbd2-0cb6-4337-b786-1030604e8c66_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_e3fac458-051b-498a-b6b8-f43f86b7f447" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_c299fbd2-0cb6-4337-b786-1030604e8c66" xlink:to="loc_us-gaap_HedgingRelationshipDomain_e3fac458-051b-498a-b6b8-f43f86b7f447" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_53e5d27e-49a6-445b-9a26-29e9c35ab2b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowHedgingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_e3fac458-051b-498a-b6b8-f43f86b7f447" xlink:to="loc_us-gaap_CashFlowHedgingMember_53e5d27e-49a6-445b-9a26-29e9c35ab2b9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_20079fe8-14c2-4a4e-82bd-9e12afa7c5ce" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueHedgingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_e3fac458-051b-498a-b6b8-f43f86b7f447" xlink:to="loc_us-gaap_FairValueHedgingMember_20079fe8-14c2-4a4e-82bd-9e12afa7c5ce" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetNotionalAmount_4789f68e-2aab-44d9-a13a-5c17ccd8eec7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetNotionalAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_34dca6d8-4d7c-4bf3-a4a1-61eb9b4ecae9" xlink:to="loc_us-gaap_DerivativeAssetNotionalAmount_4789f68e-2aab-44d9-a13a-5c17ccd8eec7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_45af04ae-7e74-4eb7-8b86-c4df4356d2ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_34dca6d8-4d7c-4bf3-a4a1-61eb9b4ecae9" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_45af04ae-7e74-4eb7-8b86-c4df4356d2ca" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_25edb60c-bdf7-4a00-8805-a3cca511f010" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_34dca6d8-4d7c-4bf3-a4a1-61eb9b4ecae9" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_25edb60c-bdf7-4a00-8805-a3cca511f010" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/PropertyandEquipmentNetScheduleofPropertyandEquipmentNetDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#PropertyandEquipmentNetScheduleofPropertyandEquipmentNetDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/PropertyandEquipmentNetScheduleofPropertyandEquipmentNetDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9aa1dd36-f2e6-4961-805f-c8ee38c8980c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_dee185d9-df4f-4af6-ab09-9cc729bf9da9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9aa1dd36-f2e6-4961-805f-c8ee38c8980c" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_dee185d9-df4f-4af6-ab09-9cc729bf9da9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ffeb5016-d468-4132-80f2-9a5a361724cc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_dee185d9-df4f-4af6-ab09-9cc729bf9da9" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ffeb5016-d468-4132-80f2-9a5a361724cc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ffeb5016-d468-4132-80f2-9a5a361724cc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ffeb5016-d468-4132-80f2-9a5a361724cc" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ffeb5016-d468-4132-80f2-9a5a361724cc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e1f01139-23c7-472c-85e9-547bd82bfc02" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ffeb5016-d468-4132-80f2-9a5a361724cc" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e1f01139-23c7-472c-85e9-547bd82bfc02" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_00367891-8e1a-4961-b240-b30ffd90d730" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ComputerEquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e1f01139-23c7-472c-85e9-547bd82bfc02" xlink:to="loc_us-gaap_ComputerEquipmentMember_00367891-8e1a-4961-b240-b30ffd90d730" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_OfficeFurnitureAndEquipmentMember_dae700ca-51bf-4940-a0c2-24aa9e44b37b" xlink:href="vrns-20231231.xsd#vrns_OfficeFurnitureAndEquipmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e1f01139-23c7-472c-85e9-547bd82bfc02" xlink:to="loc_vrns_OfficeFurnitureAndEquipmentMember_dae700ca-51bf-4940-a0c2-24aa9e44b37b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_a2f2bc1c-d26c-4e95-93ac-e340824a3223" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LeaseholdImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_e1f01139-23c7-472c-85e9-547bd82bfc02" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_a2f2bc1c-d26c-4e95-93ac-e340824a3223" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_e71c0e3c-6db6-40ba-b4fa-fe146b512e2d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9aa1dd36-f2e6-4961-805f-c8ee38c8980c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_e71c0e3c-6db6-40ba-b4fa-fe146b512e2d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_16b96b85-ce02-404a-990e-6a3c2a252870" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9aa1dd36-f2e6-4961-805f-c8ee38c8980c" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_16b96b85-ce02-404a-990e-6a3c2a252870" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_fe22f362-4ffd-4ea9-9eb8-07598a78314c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9aa1dd36-f2e6-4961-805f-c8ee38c8980c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_fe22f362-4ffd-4ea9-9eb8-07598a78314c" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/ConvertibleSeniorNotesandCappedCallTransactionsNarrativeDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#ConvertibleSeniorNotesandCappedCallTransactionsNarrativeDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/ConvertibleSeniorNotesandCappedCallTransactionsNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_240544af-c6bf-4f34-941c-1ea56bcb7afe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_DebtInstrumentTable_240544af-c6bf-4f34-941c-1ea56bcb7afe" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_54048d80-bc42-4cfd-adf6-5d0a02c0be73" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_240544af-c6bf-4f34-941c-1ea56bcb7afe" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_54048d80-bc42-4cfd-adf6-5d0a02c0be73" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_54048d80-bc42-4cfd-adf6-5d0a02c0be73_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_54048d80-bc42-4cfd-adf6-5d0a02c0be73" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_54048d80-bc42-4cfd-adf6-5d0a02c0be73_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d2f0fe9e-f657-42f4-b086-ab6f6f2051f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_54048d80-bc42-4cfd-adf6-5d0a02c0be73" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d2f0fe9e-f657-42f4-b086-ab6f6f2051f1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_693dca27-83df-48d3-bf3e-7c341c4eacbb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConvertibleDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d2f0fe9e-f657-42f4-b086-ab6f6f2051f1" xlink:to="loc_us-gaap_ConvertibleDebtMember_693dca27-83df-48d3-bf3e-7c341c4eacbb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_d6e1c2c2-9d5e-4226-98e6-0d77010518b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_240544af-c6bf-4f34-941c-1ea56bcb7afe" xlink:to="loc_us-gaap_DebtInstrumentAxis_d6e1c2c2-9d5e-4226-98e6-0d77010518b1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d6e1c2c2-9d5e-4226-98e6-0d77010518b1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_d6e1c2c2-9d5e-4226-98e6-0d77010518b1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d6e1c2c2-9d5e-4226-98e6-0d77010518b1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_30de710f-36ed-4873-b252-8e67f8e101f6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_d6e1c2c2-9d5e-4226-98e6-0d77010518b1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_30de710f-36ed-4873-b252-8e67f8e101f6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_fbf12d3e-db9d-4b1f-a1c9-993ea638c57e" xlink:href="vrns-20231231.xsd#vrns_TwoThousandAndTwentyFiveSeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_30de710f-36ed-4873-b252-8e67f8e101f6" xlink:to="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_fbf12d3e-db9d-4b1f-a1c9-993ea638c57e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_fcd492ee-3acd-4f84-862e-ba6ed41f7872" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_240544af-c6bf-4f34-941c-1ea56bcb7afe" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_fcd492ee-3acd-4f84-862e-ba6ed41f7872" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_fcd492ee-3acd-4f84-862e-ba6ed41f7872_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_fcd492ee-3acd-4f84-862e-ba6ed41f7872" xlink:to="loc_us-gaap_EquityComponentDomain_fcd492ee-3acd-4f84-862e-ba6ed41f7872_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_54a545a0-d991-41b4-9fa4-318b63a1595e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_fcd492ee-3acd-4f84-862e-ba6ed41f7872" xlink:to="loc_us-gaap_EquityComponentDomain_54a545a0-d991-41b4-9fa4-318b63a1595e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_b4c1de95-805f-4f1e-ba54-46354c9bf3b8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_54a545a0-d991-41b4-9fa4-318b63a1595e" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_b4c1de95-805f-4f1e-ba54-46354c9bf3b8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_30676eab-9493-402b-a354-e264f8ed2df1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_240544af-c6bf-4f34-941c-1ea56bcb7afe" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_30676eab-9493-402b-a354-e264f8ed2df1" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_30676eab-9493-402b-a354-e264f8ed2df1_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_30676eab-9493-402b-a354-e264f8ed2df1" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_30676eab-9493-402b-a354-e264f8ed2df1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5cdeccad-82c0-43fd-936b-ff61ba4db8c6" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_30676eab-9493-402b-a354-e264f8ed2df1" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5cdeccad-82c0-43fd-936b-ff61ba4db8c6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_c4e98515-3553-4ae4-8c0b-0f8973569a72" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_5cdeccad-82c0-43fd-936b-ff61ba4db8c6" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_c4e98515-3553-4ae4-8c0b-0f8973569a72" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_742d01d2-6266-48e7-8dfa-2d282ecee700" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_742d01d2-6266-48e7-8dfa-2d282ecee700" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromConvertibleDebt_eb925b14-f26a-411c-a990-91cf0052aac1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromConvertibleDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_ProceedsFromConvertibleDebt_eb925b14-f26a-411c-a990-91cf0052aac1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_PaymentsForCappedCalls_59166bfb-8dee-49ab-be8a-0de878f38214" xlink:href="vrns-20231231.xsd#vrns_PaymentsForCappedCalls"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_vrns_PaymentsForCappedCalls_59166bfb-8dee-49ab-be8a-0de878f38214" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_7362b749-ed33-47ad-a4b5-1cb52d17605d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_7362b749-ed33-47ad-a4b5-1cb52d17605d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_461808a8-7aeb-4781-b3e3-3d242e8cba49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentConvertibleConversionRatio1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_461808a8-7aeb-4781-b3e3-3d242e8cba49" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_c9ac3b89-4052-4975-8852-4c204d9019c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_c9ac3b89-4052-4975-8852-4c204d9019c5" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9fd4d3cc-fb11-4894-9bb8-7c7c5174f8a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_9fd4d3cc-fb11-4894-9bb8-7c7c5174f8a5" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_91c19ab9-589c-4d5c-99d1-2ed41e77ba52" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_91c19ab9-589c-4d5c-99d1-2ed41e77ba52" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_38c2ba42-c90f-4ced-b5d7-68dc04a99fd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapital"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_AdditionalPaidInCapital_38c2ba42-c90f-4ced-b5d7-68dc04a99fd2" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_261661d8-71ba-4118-97cf-cadc980a0ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Liabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_Liabilities_261661d8-71ba-4118-97cf-cadc980a0ccb" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_1fc30946-af6a-4773-8618-92027e806289" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_us-gaap_LongTermDebtFairValue_1fc30946-af6a-4773-8618-92027e806289" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DerivativeInitialCapPrice_e7feef25-671c-4d06-b2a3-5fcf8eb243b4" xlink:href="vrns-20231231.xsd#vrns_DerivativeInitialCapPrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_2a484987-699a-4d2e-859e-5a6516e4153f" xlink:to="loc_vrns_DerivativeInitialCapPrice_e7feef25-671c-4d06-b2a3-5fcf8eb243b4" xlink:type="arc" order="11"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/ConvertibleSeniorNotesandCappedCallTransactionsScheduleofConvertibleNotesDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#ConvertibleSeniorNotesandCappedCallTransactionsScheduleofConvertibleNotesDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/ConvertibleSeniorNotesandCappedCallTransactionsScheduleofConvertibleNotesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_d4afa26e-cd82-4422-9702-1048a263736d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_fb26d8c5-9f07-467e-9e25-48bf46b0be01" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d4afa26e-cd82-4422-9702-1048a263736d" xlink:to="loc_us-gaap_DebtInstrumentTable_fb26d8c5-9f07-467e-9e25-48bf46b0be01" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_182206a3-40e3-4385-ad83-8b20f2ccabc5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_fb26d8c5-9f07-467e-9e25-48bf46b0be01" xlink:to="loc_us-gaap_DebtInstrumentAxis_182206a3-40e3-4385-ad83-8b20f2ccabc5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_182206a3-40e3-4385-ad83-8b20f2ccabc5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_182206a3-40e3-4385-ad83-8b20f2ccabc5" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_182206a3-40e3-4385-ad83-8b20f2ccabc5_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_57d06aff-d78b-4285-abc4-5f03b77b817d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_182206a3-40e3-4385-ad83-8b20f2ccabc5" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_57d06aff-d78b-4285-abc4-5f03b77b817d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_581a40e7-23f5-4ab7-9b55-0e163c7b6a8c" xlink:href="vrns-20231231.xsd#vrns_TwoThousandAndTwentyFiveSeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_57d06aff-d78b-4285-abc4-5f03b77b817d" xlink:to="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_581a40e7-23f5-4ab7-9b55-0e163c7b6a8c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions_3bb1b913-73eb-4ebf-992c-f8ccedc6d677" xlink:href="vrns-20231231.xsd#vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d4afa26e-cd82-4422-9702-1048a263736d" xlink:to="loc_vrns_DebtInstrumentFaceAmountIncludingAdditionalPurchasesFromExercisedOptions_3bb1b913-73eb-4ebf-992c-f8ccedc6d677" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_b19bed55-250a-4465-9b15-a895bf112036" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d4afa26e-cd82-4422-9702-1048a263736d" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_b19bed55-250a-4465-9b15-a895bf112036" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtNoncurrent_8ca55d29-24ea-48df-b5ff-1acdc8db219e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConvertibleDebtNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d4afa26e-cd82-4422-9702-1048a263736d" xlink:to="loc_us-gaap_ConvertibleDebtNoncurrent_8ca55d29-24ea-48df-b5ff-1acdc8db219e" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/ConvertibleSeniorNotesandCappedCallTransactionsScheduleofInterestExpenseDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#ConvertibleSeniorNotesandCappedCallTransactionsScheduleofInterestExpenseDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/ConvertibleSeniorNotesandCappedCallTransactionsScheduleofInterestExpenseDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_bfc79ee6-2fa1-4db3-947e-6bc83606596f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_82808f51-3ce6-44da-a495-518e1821f7e3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bfc79ee6-2fa1-4db3-947e-6bc83606596f" xlink:to="loc_us-gaap_DebtInstrumentTable_82808f51-3ce6-44da-a495-518e1821f7e3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_ce884491-486f-4eb6-a70a-80edc7d28686" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_82808f51-3ce6-44da-a495-518e1821f7e3" xlink:to="loc_us-gaap_DebtInstrumentAxis_ce884491-486f-4eb6-a70a-80edc7d28686" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ce884491-486f-4eb6-a70a-80edc7d28686_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_ce884491-486f-4eb6-a70a-80edc7d28686" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ce884491-486f-4eb6-a70a-80edc7d28686_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_25b523a7-aa79-42d0-95d3-e3eda77b3ca2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_ce884491-486f-4eb6-a70a-80edc7d28686" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_25b523a7-aa79-42d0-95d3-e3eda77b3ca2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_b324cb9f-7acf-41b3-a409-0f7478712d9d" xlink:href="vrns-20231231.xsd#vrns_TwoThousandAndTwentyFiveSeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_25b523a7-aa79-42d0-95d3-e3eda77b3ca2" xlink:to="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_b324cb9f-7acf-41b3-a409-0f7478712d9d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebtExcludingAmortization_4f2f31f3-651e-4337-8e1a-e8089eacd003" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpenseDebtExcludingAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bfc79ee6-2fa1-4db3-947e-6bc83606596f" xlink:to="loc_us-gaap_InterestExpenseDebtExcludingAmortization_4f2f31f3-651e-4337-8e1a-e8089eacd003" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_8533a634-95f4-400d-b2ed-e65f2cce598d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfDebtDiscountPremium"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bfc79ee6-2fa1-4db3-947e-6bc83606596f" xlink:to="loc_us-gaap_AmortizationOfDebtDiscountPremium_8533a634-95f4-400d-b2ed-e65f2cce598d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_6e0be49b-a380-420d-a115-807e5b741adc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfFinancingCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bfc79ee6-2fa1-4db3-947e-6bc83606596f" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_6e0be49b-a380-420d-a115-807e5b741adc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_2954d86f-b4c8-4dc8-a04c-a19b6894e476" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpenseDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bfc79ee6-2fa1-4db3-947e-6bc83606596f" xlink:to="loc_us-gaap_InterestExpenseDebt_2954d86f-b4c8-4dc8-a04c-a19b6894e476" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/GoodwillandIntangibleAssetsCostandAmortizationofIntangibleAssetsDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#GoodwillandIntangibleAssetsCostandAmortizationofIntangibleAssetsDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/GoodwillandIntangibleAssetsCostandAmortizationofIntangibleAssetsDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f8668d12-7347-4a47-91da-cd728b6174ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b53dfc81-e819-48b3-827a-95c66b7ff5b2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f8668d12-7347-4a47-91da-cd728b6174ec" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b53dfc81-e819-48b3-827a-95c66b7ff5b2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8537e17-c8f3-4c08-b586-ed1c3658ea32" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_b53dfc81-e819-48b3-827a-95c66b7ff5b2" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8537e17-c8f3-4c08-b586-ed1c3658ea32" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b8537e17-c8f3-4c08-b586-ed1c3658ea32_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8537e17-c8f3-4c08-b586-ed1c3658ea32" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_b8537e17-c8f3-4c08-b586-ed1c3658ea32_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5164c49a-b6a6-43b3-a670-6185a4f64e3a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_b8537e17-c8f3-4c08-b586-ed1c3658ea32" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5164c49a-b6a6-43b3-a670-6185a4f64e3a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_DevelopedTechnologyRightsAndTrademarksMember_9674202f-a7c2-47c1-a87f-712f47b156bf" xlink:href="vrns-20231231.xsd#vrns_DevelopedTechnologyRightsAndTrademarksMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_5164c49a-b6a6-43b3-a670-6185a4f64e3a" xlink:to="loc_vrns_DevelopedTechnologyRightsAndTrademarksMember_9674202f-a7c2-47c1-a87f-712f47b156bf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_acddd3a6-d2ec-412e-9a61-fad28460fb43" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f8668d12-7347-4a47-91da-cd728b6174ec" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_acddd3a6-d2ec-412e-9a61-fad28460fb43" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b68576f0-a100-491a-a1d1-de1fc820319f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f8668d12-7347-4a47-91da-cd728b6174ec" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b68576f0-a100-491a-a1d1-de1fc820319f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_d0f37594-5f22-4d67-93b7-b44aa5939d8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f8668d12-7347-4a47-91da-cd728b6174ec" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_d0f37594-5f22-4d67-93b7-b44aa5939d8e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_013934f1-b06d-4fe5-9c24-963cd4b11015" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_f8668d12-7347-4a47-91da-cd728b6174ec" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_013934f1-b06d-4fe5-9c24-963cd4b11015" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/FairValueMeasurementsAssetsandLiabilitiesMeasuredatFairValueDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_f32e3770-0dcc-40c1-8619-fe139e4f6dbb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_f32e3770-0dcc-40c1-8619-fe139e4f6dbb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_f32e3770-0dcc-40c1-8619-fe139e4f6dbb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_f32e3770-0dcc-40c1-8619-fe139e4f6dbb" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_f32e3770-0dcc-40c1-8619-fe139e4f6dbb_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_a3693f4a-67ec-4ecd-b8dc-d3e72e103627" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_f32e3770-0dcc-40c1-8619-fe139e4f6dbb" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_a3693f4a-67ec-4ecd-b8dc-d3e72e103627" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_6818986d-6ce5-433c-8160-55647a13e066" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_a3693f4a-67ec-4ecd-b8dc-d3e72e103627" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_6818986d-6ce5-433c-8160-55647a13e066" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ce1e76d-da01-49c9-b97f-c0d9dd1b3be1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ce1e76d-da01-49c9-b97f-c0d9dd1b3be1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ce1e76d-da01-49c9-b97f-c0d9dd1b3be1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ce1e76d-da01-49c9-b97f-c0d9dd1b3be1" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ce1e76d-da01-49c9-b97f-c0d9dd1b3be1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1cd294fd-d389-47c9-b66e-416e7c8d824b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ce1e76d-da01-49c9-b97f-c0d9dd1b3be1" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1cd294fd-d389-47c9-b66e-416e7c8d824b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_4e33a7d5-3769-4192-82da-43d732d167a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1cd294fd-d389-47c9-b66e-416e7c8d824b" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_4e33a7d5-3769-4192-82da-43d732d167a0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_87acf01d-19a3-4e67-8fff-8e3381e76a98" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1cd294fd-d389-47c9-b66e-416e7c8d824b" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_87acf01d-19a3-4e67-8fff-8e3381e76a98" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_2ba9a7ca-3c9b-4b32-b132-a75cbad5cf3d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_1cd294fd-d389-47c9-b66e-416e7c8d824b" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_2ba9a7ca-3c9b-4b32-b132-a75cbad5cf3d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_48a2a70b-4391-42f1-89dd-14be2a7d0bfb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_48a2a70b-4391-42f1-89dd-14be2a7d0bfb" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_48a2a70b-4391-42f1-89dd-14be2a7d0bfb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_48a2a70b-4391-42f1-89dd-14be2a7d0bfb" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_48a2a70b-4391-42f1-89dd-14be2a7d0bfb_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_60e4cdca-f802-41cf-b646-5f288824ba3a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_48a2a70b-4391-42f1-89dd-14be2a7d0bfb" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_60e4cdca-f802-41cf-b646-5f288824ba3a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_87d8babd-ea4f-4d91-896a-01d9c6318914" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MoneyMarketFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_60e4cdca-f802-41cf-b646-5f288824ba3a" xlink:to="loc_us-gaap_MoneyMarketFundsMember_87d8babd-ea4f-4d91-896a-01d9c6318914" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_USTreasurySecuritiesIncludedInCashAndCashEquivalentsMember_21ebeb40-a6ee-4909-810b-1eb01a2fb2a8" xlink:href="vrns-20231231.xsd#vrns_USTreasurySecuritiesIncludedInCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_60e4cdca-f802-41cf-b646-5f288824ba3a" xlink:to="loc_vrns_USTreasurySecuritiesIncludedInCashAndCashEquivalentsMember_21ebeb40-a6ee-4909-810b-1eb01a2fb2a8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_1f95f580-e9b4-4149-9165-bb3d24420b17" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_60e4cdca-f802-41cf-b646-5f288824ba3a" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_1f95f580-e9b4-4149-9165-bb3d24420b17" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_a4b5394d-313d-4a02-9cd3-39aed4038d8d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommercialPaperMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_60e4cdca-f802-41cf-b646-5f288824ba3a" xlink:to="loc_us-gaap_CommercialPaperMember_a4b5394d-313d-4a02-9cd3-39aed4038d8d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_48ae8f55-28aa-4607-8c71-f2cba021ac0d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateBondSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_60e4cdca-f802-41cf-b646-5f288824ba3a" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_48ae8f55-28aa-4607-8c71-f2cba021ac0d" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_983e8793-dcda-41ad-9d2e-5267abc3b4a8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_983e8793-dcda-41ad-9d2e-5267abc3b4a8" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_983e8793-dcda-41ad-9d2e-5267abc3b4a8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_983e8793-dcda-41ad-9d2e-5267abc3b4a8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_983e8793-dcda-41ad-9d2e-5267abc3b4a8_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_9e63c9c2-af05-4c6b-ba8b-3b19502c9061" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_983e8793-dcda-41ad-9d2e-5267abc3b4a8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_9e63c9c2-af05-4c6b-ba8b-3b19502c9061" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_b2b4e369-5bd3-4e9a-bf7c-c94bad5474d7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeForwardMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_9e63c9c2-af05-4c6b-ba8b-3b19502c9061" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_b2b4e369-5bd3-4e9a-bf7c-c94bad5474d7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_a107919a-bbe6-4aa1-9439-60fd53262d32" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_a107919a-bbe6-4aa1-9439-60fd53262d32" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_a107919a-bbe6-4aa1-9439-60fd53262d32_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_a107919a-bbe6-4aa1-9439-60fd53262d32" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_a107919a-bbe6-4aa1-9439-60fd53262d32_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_254a63a2-a3be-40a1-a392-e9defe5d0fb8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_a107919a-bbe6-4aa1-9439-60fd53262d32" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_254a63a2-a3be-40a1-a392-e9defe5d0fb8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_AccruedExpensesAndOtherShortTermLiabilitiesMember_77280316-5822-4152-a3aa-74440c433e05" xlink:href="vrns-20231231.xsd#vrns_AccruedExpensesAndOtherShortTermLiabilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_254a63a2-a3be-40a1-a392-e9defe5d0fb8" xlink:to="loc_vrns_AccruedExpensesAndOtherShortTermLiabilitiesMember_77280316-5822-4152-a3aa-74440c433e05" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncurrentLiabilitiesMember_68708b10-419e-4f1c-a447-0d814fb85bc3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNoncurrentLiabilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_254a63a2-a3be-40a1-a392-e9defe5d0fb8" xlink:to="loc_us-gaap_OtherNoncurrentLiabilitiesMember_68708b10-419e-4f1c-a447-0d814fb85bc3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_21394473-491a-4878-bff8-b5c76c5dd808" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a09856dd-8022-4943-9f4f-2813969f7d71" xlink:to="loc_us-gaap_FinancialInstrumentAxis_21394473-491a-4878-bff8-b5c76c5dd808" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_21394473-491a-4878-bff8-b5c76c5dd808_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_21394473-491a-4878-bff8-b5c76c5dd808" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_21394473-491a-4878-bff8-b5c76c5dd808_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ea2caeb7-bb84-4221-b16a-335a769dec70" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_21394473-491a-4878-bff8-b5c76c5dd808" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ea2caeb7-bb84-4221-b16a-335a769dec70" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_39a98956-d471-46b1-bcfe-fce8b2b82aef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_USTreasurySecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_ea2caeb7-bb84-4221-b16a-335a769dec70" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_39a98956-d471-46b1-bcfe-fce8b2b82aef" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_e31c4cd1-3919-4dc0-addf-9b384f357049" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_e31c4cd1-3919-4dc0-addf-9b384f357049" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsFairValueDisclosure_9a5c1021-915d-42bb-a59c-292d415c8132" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_us-gaap_InvestmentsFairValueDisclosure_9a5c1021-915d-42bb-a59c-292d415c8132" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_3bb85a44-de2f-4781-a9bf-219173af038f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_us-gaap_DerivativeAssets_3bb85a44-de2f-4781-a9bf-219173af038f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketableSecuritiesNoncurrent_03649565-358e-4be2-9df3-0c4da56d8440" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MarketableSecuritiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_us-gaap_MarketableSecuritiesNoncurrent_03649565-358e-4be2-9df3-0c4da56d8440" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_79d205bc-8c58-4fda-9754-6a8a97583cc3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_79d205bc-8c58-4fda-9754-6a8a97583cc3" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_fc885b89-2fca-4073-8821-d773b95d818e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_us-gaap_DerivativeLiabilities_fc885b89-2fca-4073-8821-d773b95d818e" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_FinancialAssetsLiabilitiesFairValueDisclosure_710a44d8-216b-4f9c-bc04-c56435976851" xlink:href="vrns-20231231.xsd#vrns_FinancialAssetsLiabilitiesFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_9a2efdf2-0116-47c1-8fe9-a30290e52a42" xlink:to="loc_vrns_FinancialAssetsLiabilitiesFairValueDisclosure_710a44d8-216b-4f9c-bc04-c56435976851" xlink:type="arc" order="6"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/StockholdersEquityNarrativeDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#StockholdersEquityNarrativeDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/StockholdersEquityNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_170b0345-2114-44c3-a57a-bcf5c6915ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_170b0345-2114-44c3-a57a-bcf5c6915ebb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_0fe617da-1c06-489a-9edb-567dba5c6bdc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_170b0345-2114-44c3-a57a-bcf5c6915ebb" xlink:to="loc_us-gaap_PlanNameAxis_0fe617da-1c06-489a-9edb-567dba5c6bdc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_0fe617da-1c06-489a-9edb-567dba5c6bdc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_0fe617da-1c06-489a-9edb-567dba5c6bdc" xlink:to="loc_us-gaap_PlanNameDomain_0fe617da-1c06-489a-9edb-567dba5c6bdc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_e85ff768-c41b-478a-8219-e6cd486a777c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_0fe617da-1c06-489a-9edb-567dba5c6bdc" xlink:to="loc_us-gaap_PlanNameDomain_e85ff768-c41b-478a-8219-e6cd486a777c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_The2005StockPlanMember_ae358107-bc1d-46e0-9e6e-b8aa5a4b1e7c" xlink:href="vrns-20231231.xsd#vrns_The2005StockPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_e85ff768-c41b-478a-8219-e6cd486a777c" xlink:to="loc_vrns_The2005StockPlanMember_ae358107-bc1d-46e0-9e6e-b8aa5a4b1e7c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_The2013OmnibusEquityAwardPlanMember_963949b4-b1d2-4fb6-9b3e-c9cda3a194f9" xlink:href="vrns-20231231.xsd#vrns_The2013OmnibusEquityAwardPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_e85ff768-c41b-478a-8219-e6cd486a777c" xlink:to="loc_vrns_The2013OmnibusEquityAwardPlanMember_963949b4-b1d2-4fb6-9b3e-c9cda3a194f9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_ESPP2015Member_49e46848-f070-40fa-b123-b7540e03a1bc" xlink:href="vrns-20231231.xsd#vrns_ESPP2015Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_e85ff768-c41b-478a-8219-e6cd486a777c" xlink:to="loc_vrns_ESPP2015Member_49e46848-f070-40fa-b123-b7540e03a1bc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_The2023StockPlanMember_a054620f-21db-483f-8e0d-bacba600afb0" xlink:href="vrns-20231231.xsd#vrns_The2023StockPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_e85ff768-c41b-478a-8219-e6cd486a777c" xlink:to="loc_vrns_The2023StockPlanMember_a054620f-21db-483f-8e0d-bacba600afb0" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_1a48bf7b-b543-469a-a8d2-f29139df9b8e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_170b0345-2114-44c3-a57a-bcf5c6915ebb" xlink:to="loc_us-gaap_AwardTypeAxis_1a48bf7b-b543-469a-a8d2-f29139df9b8e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1a48bf7b-b543-469a-a8d2-f29139df9b8e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_1a48bf7b-b543-469a-a8d2-f29139df9b8e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_1a48bf7b-b543-469a-a8d2-f29139df9b8e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e3108c89-989b-4390-bba1-fab29d1cfa95" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_1a48bf7b-b543-469a-a8d2-f29139df9b8e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e3108c89-989b-4390-bba1-fab29d1cfa95" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_3eb3deb2-6060-4c7d-aba9-df3fb9305619" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockOptionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e3108c89-989b-4390-bba1-fab29d1cfa95" xlink:to="loc_us-gaap_EmployeeStockOptionMember_3eb3deb2-6060-4c7d-aba9-df3fb9305619" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_ce12d0f1-c9ce-4624-b2fc-0d6ae66cd0db" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PerformanceSharesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e3108c89-989b-4390-bba1-fab29d1cfa95" xlink:to="loc_us-gaap_PerformanceSharesMember_ce12d0f1-c9ce-4624-b2fc-0d6ae66cd0db" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RestrictedStockUnitsAndPerformanceStockUnitsMember_ce059c32-f8e0-495b-9859-bfab7f93c3fb" xlink:href="vrns-20231231.xsd#vrns_RestrictedStockUnitsAndPerformanceStockUnitsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_e3108c89-989b-4390-bba1-fab29d1cfa95" xlink:to="loc_vrns_RestrictedStockUnitsAndPerformanceStockUnitsMember_ce059c32-f8e0-495b-9859-bfab7f93c3fb" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_f005de89-8cad-4c3c-9134-1eaab19542b7" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_TitleOfIndividualAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_170b0345-2114-44c3-a57a-bcf5c6915ebb" xlink:to="loc_srt_TitleOfIndividualAxis_f005de89-8cad-4c3c-9134-1eaab19542b7" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_f005de89-8cad-4c3c-9134-1eaab19542b7_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_f005de89-8cad-4c3c-9134-1eaab19542b7" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_f005de89-8cad-4c3c-9134-1eaab19542b7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_c6945d06-bf12-4c81-b9b9-b8b57fbdb040" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_f005de89-8cad-4c3c-9134-1eaab19542b7" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_c6945d06-bf12-4c81-b9b9-b8b57fbdb040" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_ConsultantsMember_c173ec60-a7d2-45b5-bf7c-f1c945774141" xlink:href="vrns-20231231.xsd#vrns_ConsultantsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_c6945d06-bf12-4c81-b9b9-b8b57fbdb040" xlink:to="loc_vrns_ConsultantsMember_c173ec60-a7d2-45b5-bf7c-f1c945774141" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_bb4a7e0f-f2da-4be5-88ba-48c81d1b5bbf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_170b0345-2114-44c3-a57a-bcf5c6915ebb" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_bb4a7e0f-f2da-4be5-88ba-48c81d1b5bbf" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_bb4a7e0f-f2da-4be5-88ba-48c81d1b5bbf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_bb4a7e0f-f2da-4be5-88ba-48c81d1b5bbf" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_bb4a7e0f-f2da-4be5-88ba-48c81d1b5bbf_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_9bb2d085-69ca-4ad6-ad0c-055b2aeecd2e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_bb4a7e0f-f2da-4be5-88ba-48c81d1b5bbf" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_9bb2d085-69ca-4ad6-ad0c-055b2aeecd2e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_PublicStockOfferingMember_c3fbc3a0-02b9-4c21-a0e0-caab436b6713" xlink:href="vrns-20231231.xsd#vrns_PublicStockOfferingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_9bb2d085-69ca-4ad6-ad0c-055b2aeecd2e" xlink:to="loc_vrns_PublicStockOfferingMember_c3fbc3a0-02b9-4c21-a0e0-caab436b6713" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_PublicStockOfferingAdditionalOptionalSharesMember_c698bb8d-d440-4d29-9f74-d0c5d56b14b1" xlink:href="vrns-20231231.xsd#vrns_PublicStockOfferingAdditionalOptionalSharesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_9bb2d085-69ca-4ad6-ad0c-055b2aeecd2e" xlink:to="loc_vrns_PublicStockOfferingAdditionalOptionalSharesMember_c698bb8d-d440-4d29-9f74-d0c5d56b14b1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_3825788c-395b-42e7-a508-7350ae245928" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_3825788c-395b-42e7-a508-7350ae245928" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_5b758a8f-b765-4d6a-ad04-917608477344" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_5b758a8f-b765-4d6a-ad04-917608477344" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_CommonStockNumberOfVotingRights_e8035796-0080-48f2-9a7c-aa8d4935c2b2" xlink:href="vrns-20231231.xsd#vrns_CommonStockNumberOfVotingRights"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_vrns_CommonStockNumberOfVotingRights_e8035796-0080-48f2-9a7c-aa8d4935c2b2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_7aa6bb43-dee3-4501-a6d0-27aacbf09976" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquityNoteStockSplitConversionRatio1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio1_7aa6bb43-dee3-4501-a6d0-27aacbf09976" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_09734537-de70-4ef0-8950-62bfd69e7b86" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_09734537-de70-4ef0-8950-62bfd69e7b86" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_46ff02cf-25e6-4948-bc18-d7467f533f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1_46ff02cf-25e6-4948-bc18-d7467f533f3c" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_238d3d22-a14f-4459-9bb8-236a2de71e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_238d3d22-a14f-4459-9bb8-236a2de71e5c" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_CommonStockCapitalSharesReservedForFutureIssuanceAnnualIncreaseMaximum_35ad41ce-e453-4289-9820-d8b2397e1ec2" xlink:href="vrns-20231231.xsd#vrns_CommonStockCapitalSharesReservedForFutureIssuanceAnnualIncreaseMaximum"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_vrns_CommonStockCapitalSharesReservedForFutureIssuanceAnnualIncreaseMaximum_35ad41ce-e453-4289-9820-d8b2397e1ec2" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_38915957-cf96-41f7-bd4f-26701ec20d77" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_38915957-cf96-41f7-bd4f-26701ec20d77" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1b6f7acc-ec92-4a87-98e6-0c18ac6402d5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1b6f7acc-ec92-4a87-98e6-0c18ac6402d5" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_f93036f9-e76d-41cb-b15b-b33003159fc8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_f93036f9-e76d-41cb-b15b-b33003159fc8" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_ff03b17b-85ed-4d2a-89d0-c61d42e9eec3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate_ff03b17b-85ed-4d2a-89d0-c61d42e9eec3" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_d0ed29fd-8812-4792-8b9c-b14780aedc27" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent_d0ed29fd-8812-4792-8b9c-b14780aedc27" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_2e023a3b-37d3-4f97-a7f2-1cce0636c1ba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_2e023a3b-37d3-4f97-a7f2-1cce0636c1ba" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_PercentOfSharesIncreaseEmployeeStockPurchasePlan_5a139efd-8920-4c64-acd1-d27226c42d8a" xlink:href="vrns-20231231.xsd#vrns_PercentOfSharesIncreaseEmployeeStockPurchasePlan"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_vrns_PercentOfSharesIncreaseEmployeeStockPurchasePlan_5a139efd-8920-4c64-acd1-d27226c42d8a" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_CommonStockAvailabilityThresholdEmployeeStockPurchasePlan_9f4fe829-35dc-43c4-97dd-02baa99b21e6" xlink:href="vrns-20231231.xsd#vrns_CommonStockAvailabilityThresholdEmployeeStockPurchasePlan"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_vrns_CommonStockAvailabilityThresholdEmployeeStockPurchasePlan_9f4fe829-35dc-43c4-97dd-02baa99b21e6" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SharesIncreaseThresholdEmployeeStockPurchasePlan_f1146d7e-04c3-4417-a37c-6c16c3b9c92c" xlink:href="vrns-20231231.xsd#vrns_SharesIncreaseThresholdEmployeeStockPurchasePlan"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_vrns_SharesIncreaseThresholdEmployeeStockPurchasePlan_f1146d7e-04c3-4417-a37c-6c16c3b9c92c" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_7b972f88-955e-4f8b-a543-0dde8df6bc24" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_7b972f88-955e-4f8b-a543-0dde8df6bc24" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_d4bda09a-4f4b-4917-a097-d8808525ac9b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_d4bda09a-4f4b-4917-a097-d8808525ac9b" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_e0adb4f7-dc10-4daa-9d5e-16de517d1159" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockPricePerShare"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_e0adb4f7-dc10-4daa-9d5e-16de517d1159" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01ace045-f79b-44f9-b67d-e77a44a64360" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_01ace045-f79b-44f9-b67d-e77a44a64360" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_5a9a4f24-a86e-446c-9bd3-4a734ab1d4af" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_696b4f34-588a-4af6-a3f2-d3ffbe56bd68" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_5a9a4f24-a86e-446c-9bd3-4a734ab1d4af" xlink:type="arc" order="21"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/StockholdersEquityOptionsOutstandingSeparatedintoRangeofExercisePriceDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#StockholdersEquityOptionsOutstandingSeparatedintoRangeofExercisePriceDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/StockholdersEquityOptionsOutstandingSeparatedintoRangeofExercisePriceDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ClassOfStockLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_91f1a89c-eb43-430b-88c2-b7c94161c61c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfStockByClassTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_91f1a89c-eb43-430b-88c2-b7c94161c61c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_965418ed-e818-4a6a-9f28-3b3297383ce3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_91f1a89c-eb43-430b-88c2-b7c94161c61c" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_965418ed-e818-4a6a-9f28-3b3297383ce3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_965418ed-e818-4a6a-9f28-3b3297383ce3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_965418ed-e818-4a6a-9f28-3b3297383ce3" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_965418ed-e818-4a6a-9f28-3b3297383ce3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_e41151a4-759a-4885-bc11-081b2a3985c2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_965418ed-e818-4a6a-9f28-3b3297383ce3" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_e41151a4-759a-4885-bc11-081b2a3985c2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RangeOneMember_6f38a3f9-7288-461e-8964-344dc21a3445" xlink:href="vrns-20231231.xsd#vrns_RangeOneMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_e41151a4-759a-4885-bc11-081b2a3985c2" xlink:to="loc_vrns_RangeOneMember_6f38a3f9-7288-461e-8964-344dc21a3445" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RangeTwoMember_24ad8018-3ae1-44de-afa9-2292d089ae5b" xlink:href="vrns-20231231.xsd#vrns_RangeTwoMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_e41151a4-759a-4885-bc11-081b2a3985c2" xlink:to="loc_vrns_RangeTwoMember_24ad8018-3ae1-44de-afa9-2292d089ae5b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RangeThreeMember_e9f5fde4-bdb6-4b40-9fef-6e3b478248d0" xlink:href="vrns-20231231.xsd#vrns_RangeThreeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_e41151a4-759a-4885-bc11-081b2a3985c2" xlink:to="loc_vrns_RangeThreeMember_e9f5fde4-bdb6-4b40-9fef-6e3b478248d0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RangeFourMember_4f72d498-be81-4c3a-9e6c-9353b0817ea9" xlink:href="vrns-20231231.xsd#vrns_RangeFourMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_e41151a4-759a-4885-bc11-081b2a3985c2" xlink:to="loc_vrns_RangeFourMember_4f72d498-be81-4c3a-9e6c-9353b0817ea9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit_a78d2a12-bbad-44d6-9231-868d920710b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit_a78d2a12-bbad-44d6-9231-868d920710b1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit_8eb857fd-ea0f-4529-882b-650cdc81bdda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit_8eb857fd-ea0f-4529-882b-650cdc81bdda" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions_5efd7821-ccc6-4412-b60b-d3ce046eafda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions_5efd7821-ccc6-4412-b60b-d3ce046eafda" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2_8d9756b1-1df9-46f4-82e3-b9670b8df64c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2_8d9756b1-1df9-46f4-82e3-b9670b8df64c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1_cac44618-72a6-4746-939f-4387cc28ca9e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1_cac44618-72a6-4746-939f-4387cc28ca9e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions_38f6f28e-a50c-4450-a41b-8c806645356b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions_38f6f28e-a50c-4450-a41b-8c806645356b" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2_79b16701-64be-486c-b0cc-02246e934235" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2_79b16701-64be-486c-b0cc-02246e934235" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_b1b4f962-bef2-4df8-a825-599a939de12c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_c4aa88ee-3aa1-4482-a31a-3622e68340ea" xlink:to="loc_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1_b1b4f962-bef2-4df8-a825-599a939de12c" xlink:type="arc" order="7"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/StockholdersEquityOutstandingOptionsGrantedtoConsultantsforSalesandPremarketingServicesDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#StockholdersEquityOutstandingOptionsGrantedtoConsultantsforSalesandPremarketingServicesDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/StockholdersEquityOutstandingOptionsGrantedtoConsultantsforSalesandPremarketingServicesDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8798c253-a515-4699-bd45-ec808bb1852b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8798c253-a515-4699-bd45-ec808bb1852b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateAxis_fb153181-1533-418d-9a9e-d57d5817b8c4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardDateAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8798c253-a515-4699-bd45-ec808bb1852b" xlink:to="loc_us-gaap_AwardDateAxis_fb153181-1533-418d-9a9e-d57d5817b8c4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_fb153181-1533-418d-9a9e-d57d5817b8c4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardDateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardDateAxis_fb153181-1533-418d-9a9e-d57d5817b8c4" xlink:to="loc_us-gaap_AwardDateDomain_fb153181-1533-418d-9a9e-d57d5817b8c4_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardDateDomain_561b8383-6c7d-4a22-882e-2c30eda09552" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardDateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardDateAxis_fb153181-1533-418d-9a9e-d57d5817b8c4" xlink:to="loc_us-gaap_AwardDateDomain_561b8383-6c7d-4a22-882e-2c30eda09552" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_March2014February2016Member_e70e44bf-9d26-48a1-900f-89d91e9ad9e4" xlink:href="vrns-20231231.xsd#vrns_March2014February2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AwardDateDomain_561b8383-6c7d-4a22-882e-2c30eda09552" xlink:to="loc_vrns_March2014February2016Member_e70e44bf-9d26-48a1-900f-89d91e9ad9e4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualAxis_5c6cfea7-1d1b-4a76-a517-abd2bec85f1d" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_TitleOfIndividualAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8798c253-a515-4699-bd45-ec808bb1852b" xlink:to="loc_srt_TitleOfIndividualAxis_5c6cfea7-1d1b-4a76-a517-abd2bec85f1d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_5c6cfea7-1d1b-4a76-a517-abd2bec85f1d_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_TitleOfIndividualAxis_5c6cfea7-1d1b-4a76-a517-abd2bec85f1d" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_5c6cfea7-1d1b-4a76-a517-abd2bec85f1d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d3e85320-5451-4755-b3d9-6d879a2548a1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_TitleOfIndividualWithRelationshipToEntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_TitleOfIndividualAxis_5c6cfea7-1d1b-4a76-a517-abd2bec85f1d" xlink:to="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d3e85320-5451-4755-b3d9-6d879a2548a1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_ConsultantsMember_775047b9-60c4-4813-b795-a994d97497ee" xlink:href="vrns-20231231.xsd#vrns_ConsultantsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_TitleOfIndividualWithRelationshipToEntityDomain_d3e85320-5451-4755-b3d9-6d879a2548a1" xlink:to="loc_vrns_ConsultantsMember_775047b9-60c4-4813-b795-a994d97497ee" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_e6d3ca37-d7fe-4ccf-92f1-fe7741bddf31" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8798c253-a515-4699-bd45-ec808bb1852b" xlink:to="loc_us-gaap_PlanNameAxis_e6d3ca37-d7fe-4ccf-92f1-fe7741bddf31" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_e6d3ca37-d7fe-4ccf-92f1-fe7741bddf31_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_e6d3ca37-d7fe-4ccf-92f1-fe7741bddf31" xlink:to="loc_us-gaap_PlanNameDomain_e6d3ca37-d7fe-4ccf-92f1-fe7741bddf31_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_4fadf444-ace6-4b4c-82d8-367f95429256" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_e6d3ca37-d7fe-4ccf-92f1-fe7741bddf31" xlink:to="loc_us-gaap_PlanNameDomain_4fadf444-ace6-4b4c-82d8-367f95429256" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_The2005StockPlanMember_ab05c42e-33db-4430-9948-80efe1f71135" xlink:href="vrns-20231231.xsd#vrns_The2005StockPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4fadf444-ace6-4b4c-82d8-367f95429256" xlink:to="loc_vrns_The2005StockPlanMember_ab05c42e-33db-4430-9948-80efe1f71135" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_The2013OmnibusEquityAwardPlanMember_773638e7-b0f6-44a6-ae0a-65abf52e6e7c" xlink:href="vrns-20231231.xsd#vrns_The2013OmnibusEquityAwardPlanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_4fadf444-ace6-4b4c-82d8-367f95429256" xlink:to="loc_vrns_The2013OmnibusEquityAwardPlanMember_773638e7-b0f6-44a6-ae0a-65abf52e6e7c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_b9cd2013-2776-4892-8604-b1f51e2322e2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8798c253-a515-4699-bd45-ec808bb1852b" xlink:to="loc_srt_RangeAxis_b9cd2013-2776-4892-8604-b1f51e2322e2" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b9cd2013-2776-4892-8604-b1f51e2322e2_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_b9cd2013-2776-4892-8604-b1f51e2322e2" xlink:to="loc_srt_RangeMember_b9cd2013-2776-4892-8604-b1f51e2322e2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_8840c201-87a7-4ce7-a37e-bf57df926b34" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_b9cd2013-2776-4892-8604-b1f51e2322e2" xlink:to="loc_srt_RangeMember_8840c201-87a7-4ce7-a37e-bf57df926b34" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_5200ee4c-00f2-4514-a3c4-282d96dbd25a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8840c201-87a7-4ce7-a37e-bf57df926b34" xlink:to="loc_srt_MinimumMember_5200ee4c-00f2-4514-a3c4-282d96dbd25a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_e6e47c06-4a99-4fde-9fe2-f892b828b3b3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_8840c201-87a7-4ce7-a37e-bf57df926b34" xlink:to="loc_srt_MaximumMember_e6e47c06-4a99-4fde-9fe2-f892b828b3b3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_b99e9a44-c547-4915-aa81-9a28338a5984" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_b99e9a44-c547-4915-aa81-9a28338a5984" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_5aa2c1a8-8777-41a8-a0d8-e8ba12511b43" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_5aa2c1a8-8777-41a8-a0d8-e8ba12511b43" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_1a263ede-b467-4c39-ad09-e7d190c22c1a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_1a263ede-b467-4c39-ad09-e7d190c22c1a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_2569f275-712a-4ce1-81a8-a206baf15c8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_2569f275-712a-4ce1-81a8-a206baf15c8b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_SharebasedCompensationArrangementBySharebasedPaymentAwardExercisableDate_a8e6cfff-7cc9-4d8b-827b-7e3de3f61988" xlink:href="vrns-20231231.xsd#vrns_SharebasedCompensationArrangementBySharebasedPaymentAwardExercisableDate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:to="loc_vrns_SharebasedCompensationArrangementBySharebasedPaymentAwardExercisableDate_a8e6cfff-7cc9-4d8b-827b-7e3de3f61988" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_10e5956a-3486-44f7-a59d-29c3dda0eda0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9ee6e892-ad2e-412e-9bfc-053d6543d571" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_10e5956a-3486-44f7-a59d-29c3dda0eda0" xlink:type="arc" order="5"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/StockholdersEquityRestrictedStockUnitActivityDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#StockholdersEquityRestrictedStockUnitActivityDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/StockholdersEquityRestrictedStockUnitActivityDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6bf6053c-fe74-4738-b9de-87ace5cf814d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_47691864-2171-483b-b08d-2c7676c57bf5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6bf6053c-fe74-4738-b9de-87ace5cf814d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_47691864-2171-483b-b08d-2c7676c57bf5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_2ad0ee5e-04a8-4967-bb5d-2c827a7e4a53" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_47691864-2171-483b-b08d-2c7676c57bf5" xlink:to="loc_us-gaap_AwardTypeAxis_2ad0ee5e-04a8-4967-bb5d-2c827a7e4a53" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2ad0ee5e-04a8-4967-bb5d-2c827a7e4a53_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_2ad0ee5e-04a8-4967-bb5d-2c827a7e4a53" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2ad0ee5e-04a8-4967-bb5d-2c827a7e4a53_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a7a00db-0a45-4453-bc77-812236edc704" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_2ad0ee5e-04a8-4967-bb5d-2c827a7e4a53" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a7a00db-0a45-4453-bc77-812236edc704" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RestrictedStockUnitsAndPerformanceStockUnitsMember_a314a833-42ce-4b14-b221-50759c9ae283" xlink:href="vrns-20231231.xsd#vrns_RestrictedStockUnitsAndPerformanceStockUnitsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_9a7a00db-0a45-4453-bc77-812236edc704" xlink:to="loc_vrns_RestrictedStockUnitsAndPerformanceStockUnitsMember_a314a833-42ce-4b14-b221-50759c9ae283" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_2e5984b5-0f90-449a-9122-ca1f489ea377" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6bf6053c-fe74-4738-b9de-87ace5cf814d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_2e5984b5-0f90-449a-9122-ca1f489ea377" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_a0682f8b-6947-481b-9fa5-055ae14dfe08" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_2e5984b5-0f90-449a-9122-ca1f489ea377" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_a0682f8b-6947-481b-9fa5-055ae14dfe08" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4c52c023-e767-4f27-a5c4-50dca841547b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_2e5984b5-0f90-449a-9122-ca1f489ea377" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4c52c023-e767-4f27-a5c4-50dca841547b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_4ecdbe34-abc2-4d7b-9e5f-68b5ffa0666c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_2e5984b5-0f90-449a-9122-ca1f489ea377" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_4ecdbe34-abc2-4d7b-9e5f-68b5ffa0666c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_78e0abd4-5620-4fcd-97f8-55320b15561c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_2e5984b5-0f90-449a-9122-ca1f489ea377" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_78e0abd4-5620-4fcd-97f8-55320b15561c" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_caa4588f-002d-41fd-8be8-f21ddbd84007" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_204e9303-fa4c-4180-a46b-346fd48c8b71" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_6bf6053c-fe74-4738-b9de-87ace5cf814d" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_204e9303-fa4c-4180-a46b-346fd48c8b71" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01faee09-665b-4919-8c28-34eb71e1f83d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_204e9303-fa4c-4180-a46b-346fd48c8b71" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01faee09-665b-4919-8c28-34eb71e1f83d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_9871f9f6-32c0-4ab2-9c4c-d49bac4933af" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_204e9303-fa4c-4180-a46b-346fd48c8b71" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_9871f9f6-32c0-4ab2-9c4c-d49bac4933af" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_b7c86634-8ffb-4e26-8002-886fed32d735" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_204e9303-fa4c-4180-a46b-346fd48c8b71" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_b7c86634-8ffb-4e26-8002-886fed32d735" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_9ad913d7-256f-40ca-8c28-ad6c2cc00889" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValueAbstract_204e9303-fa4c-4180-a46b-346fd48c8b71" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_9ad913d7-256f-40ca-8c28-ad6c2cc00889" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_bac2a340-31bf-4ba3-8720-f05692ef9ae8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/StockholdersEquityNoncashStockbasedCompensationExpenseDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#StockholdersEquityNoncashStockbasedCompensationExpenseDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/StockholdersEquityNoncashStockbasedCompensationExpenseDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7c2a178e-fc4b-45dd-a7b0-7bb416babd46" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_dda24db3-4532-4881-8515-cc83d7cf0dee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7c2a178e-fc4b-45dd-a7b0-7bb416babd46" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_dda24db3-4532-4881-8515-cc83d7cf0dee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_4ab5f278-9b14-464e-adbd-b3efd2c0e20d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_dda24db3-4532-4881-8515-cc83d7cf0dee" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_4ab5f278-9b14-464e-adbd-b3efd2c0e20d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_4ab5f278-9b14-464e-adbd-b3efd2c0e20d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_4ab5f278-9b14-464e-adbd-b3efd2c0e20d" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_4ab5f278-9b14-464e-adbd-b3efd2c0e20d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_a4061aad-3be8-4704-996b-4672d8ee70a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_4ab5f278-9b14-464e-adbd-b3efd2c0e20d" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_a4061aad-3be8-4704-996b-4672d8ee70a0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_8f840abc-7435-4df4-a316-045d69ca6043" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfSalesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_a4061aad-3be8-4704-996b-4672d8ee70a0" xlink:to="loc_us-gaap_CostOfSalesMember_8f840abc-7435-4df4-a316-045d69ca6043" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_606ed2ff-22f6-4936-af33-7f47904387ce" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_a4061aad-3be8-4704-996b-4672d8ee70a0" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_606ed2ff-22f6-4936-af33-7f47904387ce" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_1d2f1ed3-6074-4377-a525-f8c71a697bef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingAndMarketingExpenseMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_a4061aad-3be8-4704-996b-4672d8ee70a0" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_1d2f1ed3-6074-4377-a525-f8c71a697bef" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_521b29ae-4901-426c-b5b4-fd01ef607908" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_a4061aad-3be8-4704-996b-4672d8ee70a0" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_521b29ae-4901-426c-b5b4-fd01ef607908" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_4f13b25e-7a5b-4b6e-8c29-ab33f3f0a5cd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7c2a178e-fc4b-45dd-a7b0-7bb416babd46" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_4f13b25e-7a5b-4b6e-8c29-ab33f3f0a5cd" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/IncomeTaxesNarrativeDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#IncomeTaxesNarrativeDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardTable_cf2cf546-6e31-4f88-89e3-6f8d313897c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_TaxCreditCarryforwardTable_cf2cf546-6e31-4f88-89e3-6f8d313897c5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_b0c89f23-c7c9-48d5-9e8d-d71f3f8dd0cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_TaxCreditCarryforwardTable_cf2cf546-6e31-4f88-89e3-6f8d313897c5" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_b0c89f23-c7c9-48d5-9e8d-d71f3f8dd0cb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_b0c89f23-c7c9-48d5-9e8d-d71f3f8dd0cb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_b0c89f23-c7c9-48d5-9e8d-d71f3f8dd0cb" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_b0c89f23-c7c9-48d5-9e8d-d71f3f8dd0cb_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_e44390cc-2808-453a-93f4-bd0a8d028ca1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_b0c89f23-c7c9-48d5-9e8d-d71f3f8dd0cb" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_e44390cc-2808-453a-93f4-bd0a8d028ca1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RetentionMember_25376c4a-8a10-4daa-b39a-f0997c35f102" xlink:href="vrns-20231231.xsd#vrns_RetentionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_e44390cc-2808-453a-93f4-bd0a8d028ca1" xlink:to="loc_vrns_RetentionMember_25376c4a-8a10-4daa-b39a-f0997c35f102" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameAxis_9f343d0a-fa22-4a4d-8157-0b4e8c647078" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_TaxCreditCarryforwardTable_cf2cf546-6e31-4f88-89e3-6f8d313897c5" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameAxis_9f343d0a-fa22-4a4d-8157-0b4e8c647078" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_9f343d0a-fa22-4a4d-8157-0b4e8c647078_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_9f343d0a-fa22-4a4d-8157-0b4e8c647078" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_9f343d0a-fa22-4a4d-8157-0b4e8c647078_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_35a2143c-57b2-44bc-8439-c4a6ca9f320a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_9f343d0a-fa22-4a4d-8157-0b4e8c647078" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_35a2143c-57b2-44bc-8439-c4a6ca9f320a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IsraelTaxAuthorityMember_c5354f9a-0fc7-4266-94d9-9fe45dd8b805" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IsraelTaxAuthorityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_35a2143c-57b2-44bc-8439-c4a6ca9f320a" xlink:to="loc_us-gaap_IsraelTaxAuthorityMember_c5354f9a-0fc7-4266-94d9-9fe45dd8b805" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_98e7ca0f-e4bc-4d5e-bbc2-df6175984682" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_TaxCreditCarryforwardTable_cf2cf546-6e31-4f88-89e3-6f8d313897c5" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_98e7ca0f-e4bc-4d5e-bbc2-df6175984682" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_98e7ca0f-e4bc-4d5e-bbc2-df6175984682_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_98e7ca0f-e4bc-4d5e-bbc2-df6175984682" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_98e7ca0f-e4bc-4d5e-bbc2-df6175984682_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_d5684b58-e8fd-42db-be4a-756bd3b819b0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_98e7ca0f-e4bc-4d5e-bbc2-df6175984682" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_d5684b58-e8fd-42db-be4a-756bd3b819b0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_0d2c8fec-50c0-4ac5-8071-73351af76d63" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticCountryMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_d5684b58-e8fd-42db-be4a-756bd3b819b0" xlink:to="loc_us-gaap_DomesticCountryMember_0d2c8fec-50c0-4ac5-8071-73351af76d63" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_18a9a405-9934-4662-8987-f2a5b6822ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_d5684b58-e8fd-42db-be4a-756bd3b819b0" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_18a9a405-9934-4662-8987-f2a5b6822ccb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCountryMember_ba178bec-891f-40cd-8d4c-9d07ce532d60" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCountryMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_d5684b58-e8fd-42db-be4a-756bd3b819b0" xlink:to="loc_us-gaap_ForeignCountryMember_ba178bec-891f-40cd-8d4c-9d07ce532d60" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_afc39bc6-f524-4c95-abac-7cfd220c1237" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_TaxCreditCarryforwardTable_cf2cf546-6e31-4f88-89e3-6f8d313897c5" xlink:to="loc_dei_LegalEntityAxis_afc39bc6-f524-4c95-abac-7cfd220c1237" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_afc39bc6-f524-4c95-abac-7cfd220c1237_default" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_afc39bc6-f524-4c95-abac-7cfd220c1237" xlink:to="loc_dei_EntityDomain_afc39bc6-f524-4c95-abac-7cfd220c1237_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7eb05045-8621-4a70-a7fa-48b642a2b9c4" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_afc39bc6-f524-4c95-abac-7cfd220c1237" xlink:to="loc_dei_EntityDomain_7eb05045-8621-4a70-a7fa-48b642a2b9c4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_VSLMember_aaf6fb4a-27a8-4ad1-a19a-e234fb692d08" xlink:href="vrns-20231231.xsd#vrns_VSLMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7eb05045-8621-4a70-a7fa-48b642a2b9c4" xlink:to="loc_vrns_VSLMember_aaf6fb4a-27a8-4ad1-a19a-e234fb692d08" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_b39152dc-749f-4602-98c0-e99a394e69e3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_TaxCreditCarryforwardTable_cf2cf546-6e31-4f88-89e3-6f8d313897c5" xlink:to="loc_srt_RangeAxis_b39152dc-749f-4602-98c0-e99a394e69e3" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b39152dc-749f-4602-98c0-e99a394e69e3_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_b39152dc-749f-4602-98c0-e99a394e69e3" xlink:to="loc_srt_RangeMember_b39152dc-749f-4602-98c0-e99a394e69e3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1199b101-f8d4-49e5-b2d8-2fe48f49bfa1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_b39152dc-749f-4602-98c0-e99a394e69e3" xlink:to="loc_srt_RangeMember_1199b101-f8d4-49e5-b2d8-2fe48f49bfa1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_893a8fcc-322c-40fd-b58b-760e72818f27" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1199b101-f8d4-49e5-b2d8-2fe48f49bfa1" xlink:to="loc_srt_MinimumMember_893a8fcc-322c-40fd-b58b-760e72818f27" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_c9074249-53f7-499a-8fce-061b4baa3afb" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_1199b101-f8d4-49e5-b2d8-2fe48f49bfa1" xlink:to="loc_srt_MaximumMember_c9074249-53f7-499a-8fce-061b4baa3afb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_e4c80b36-3540-4b9c-91ad-643b827aad29" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwards"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_OperatingLossCarryforwards_e4c80b36-3540-4b9c-91ad-643b827aad29" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration_e67583cc-2934-406a-ada2-0bfaa3071104" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration_e67583cc-2934-406a-ada2-0bfaa3071104" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAmount_e24225aa-f5b5-4da5-854b-76a2ab927d1d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_TaxCreditCarryforwardAmount_e24225aa-f5b5-4da5-854b-76a2ab927d1d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_bcff62d6-9bd1-4bc9-9e9c-e484dec33668" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_bcff62d6-9bd1-4bc9-9e9c-e484dec33668" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_d23bdc9c-0938-4c6c-b137-1d793bb665e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_d23bdc9c-0938-4c6c-b137-1d793bb665e1" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_262b4386-8a1a-473b-9390-850a7cc76469" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_262b4386-8a1a-473b-9390-850a7cc76469" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_02eafe1f-5d19-4b70-8570-abe3e4f4c49d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_02eafe1f-5d19-4b70-8570-abe3e4f4c49d" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_824a865e-be3d-4d97-b007-19409cf9493a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_824a865e-be3d-4d97-b007-19409cf9493a" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TaxRateForAmountOfDividendsDistributedOtherThanCompleteLiquidation_ca360493-a014-4f65-926b-efa292d57ef9" xlink:href="vrns-20231231.xsd#vrns_TaxRateForAmountOfDividendsDistributedOtherThanCompleteLiquidation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardLineItems_33e879ae-1337-4d38-8090-2ae8841c50ea" xlink:to="loc_vrns_TaxRateForAmountOfDividendsDistributedOtherThanCompleteLiquidation_ca360493-a014-4f65-926b-efa292d57ef9" xlink:type="arc" order="8"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/GeographicInformationandMajorCustomerDataNarrativeDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#GeographicInformationandMajorCustomerDataNarrativeDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/GeographicInformationandMajorCustomerDataNarrativeDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_d42fa160-b111-4c30-92e3-364851768933" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f7e5b899-8871-470f-9e7d-76a4d3ba8511" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d42fa160-b111-4c30-92e3-364851768933" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f7e5b899-8871-470f-9e7d-76a4d3ba8511" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_39abfd31-09d4-4b7b-82a3-ccc04c32ac08" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f7e5b899-8871-470f-9e7d-76a4d3ba8511" xlink:to="loc_srt_StatementGeographicalAxis_39abfd31-09d4-4b7b-82a3-ccc04c32ac08" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_39abfd31-09d4-4b7b-82a3-ccc04c32ac08_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_39abfd31-09d4-4b7b-82a3-ccc04c32ac08" xlink:to="loc_srt_SegmentGeographicalDomain_39abfd31-09d4-4b7b-82a3-ccc04c32ac08_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_e2424a4b-1d17-476d-8b1f-3ff514841be3" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_39abfd31-09d4-4b7b-82a3-ccc04c32ac08" xlink:to="loc_srt_SegmentGeographicalDomain_e2424a4b-1d17-476d-8b1f-3ff514841be3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_country_FR_df2ec3f1-9e24-4c92-b1fd-a57a62fd2a2c" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_FR"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_e2424a4b-1d17-476d-8b1f-3ff514841be3" xlink:to="loc_country_FR_df2ec3f1-9e24-4c92-b1fd-a57a62fd2a2c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_9df7fd26-b75d-4e2c-a7b5-358afe7b8c5b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f7e5b899-8871-470f-9e7d-76a4d3ba8511" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_9df7fd26-b75d-4e2c-a7b5-358afe7b8c5b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9df7fd26-b75d-4e2c-a7b5-358afe7b8c5b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_9df7fd26-b75d-4e2c-a7b5-358afe7b8c5b" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9df7fd26-b75d-4e2c-a7b5-358afe7b8c5b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9f1686a3-808a-4650-b09c-0b6ca8042960" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskBenchmarkDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_9df7fd26-b75d-4e2c-a7b5-358afe7b8c5b" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9f1686a3-808a-4650-b09c-0b6ca8042960" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SalesRevenueNetMember_5875f990-0718-4794-9eca-0fd7a13b0fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SalesRevenueNetMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9f1686a3-808a-4650-b09c-0b6ca8042960" xlink:to="loc_us-gaap_SalesRevenueNetMember_5875f990-0718-4794-9eca-0fd7a13b0fa0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_84b380ec-632f-4527-aea6-00e872f51d60" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_f7e5b899-8871-470f-9e7d-76a4d3ba8511" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_84b380ec-632f-4527-aea6-00e872f51d60" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_84b380ec-632f-4527-aea6-00e872f51d60_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_84b380ec-632f-4527-aea6-00e872f51d60" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_84b380ec-632f-4527-aea6-00e872f51d60_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_3921ba71-3ea4-4cc0-8bba-2215041d5074" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_84b380ec-632f-4527-aea6-00e872f51d60" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_3921ba71-3ea4-4cc0-8bba-2215041d5074" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_1bbfa949-958a-4219-a8d8-bbb53f4d1ed7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GeographicConcentrationRiskMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_3921ba71-3ea4-4cc0-8bba-2215041d5074" xlink:to="loc_us-gaap_GeographicConcentrationRiskMember_1bbfa949-958a-4219-a8d8-bbb53f4d1ed7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_72bb0c6e-796d-4a04-8b90-dd381b49408f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NumberOfReportableSegments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d42fa160-b111-4c30-92e3-364851768933" xlink:to="loc_us-gaap_NumberOfReportableSegments_72bb0c6e-796d-4a04-8b90-dd381b49408f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_8efe78bd-0c86-44e1-9318-478e57b133d9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConcentrationRiskPercentage1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_d42fa160-b111-4c30-92e3-364851768933" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_8efe78bd-0c86-44e1-9318-478e57b133d9" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/GeographicInformationandMajorCustomerDataRevenuesWithinGeographicalAreasDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#GeographicInformationandMajorCustomerDataRevenuesWithinGeographicalAreasDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/GeographicInformationandMajorCustomerDataRevenuesWithinGeographicalAreasDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_bd8bdb5f-bf9a-405c-a04b-4cedaf1fd158" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4129dcd7-2c65-454a-a7bc-911388ec1e03" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_bd8bdb5f-bf9a-405c-a04b-4cedaf1fd158" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4129dcd7-2c65-454a-a7bc-911388ec1e03" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_8f455b93-0fc7-4ea8-b540-e75d44e7aab6" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_4129dcd7-2c65-454a-a7bc-911388ec1e03" xlink:to="loc_srt_StatementGeographicalAxis_8f455b93-0fc7-4ea8-b540-e75d44e7aab6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_8f455b93-0fc7-4ea8-b540-e75d44e7aab6_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_8f455b93-0fc7-4ea8-b540-e75d44e7aab6" xlink:to="loc_srt_SegmentGeographicalDomain_8f455b93-0fc7-4ea8-b540-e75d44e7aab6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_4c970704-042b-48ce-b16f-b427e5155e45" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_8f455b93-0fc7-4ea8-b540-e75d44e7aab6" xlink:to="loc_srt_SegmentGeographicalDomain_4c970704-042b-48ce-b16f-b427e5155e45" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_NorthAmericaMember_6be7ac5e-e4af-48cf-9803-0e07b79123ac" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_NorthAmericaMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_4c970704-042b-48ce-b16f-b427e5155e45" xlink:to="loc_srt_NorthAmericaMember_6be7ac5e-e4af-48cf-9803-0e07b79123ac" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EMEAMember_c44842eb-a101-485b-8d6a-0d2ec0ce2679" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EMEAMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_4c970704-042b-48ce-b16f-b427e5155e45" xlink:to="loc_us-gaap_EMEAMember_c44842eb-a101-485b-8d6a-0d2ec0ce2679" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_RestOfWorldMember_14cdf84a-3857-4f54-bd4f-9bb63821474e" xlink:href="vrns-20231231.xsd#vrns_RestOfWorldMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_4c970704-042b-48ce-b16f-b427e5155e45" xlink:to="loc_vrns_RestOfWorldMember_14cdf84a-3857-4f54-bd4f-9bb63821474e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_d1e22a6d-a5ab-4869-86e6-2d915aabdab0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_bd8bdb5f-bf9a-405c-a04b-4cedaf1fd158" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_d1e22a6d-a5ab-4869-86e6-2d915aabdab0" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://varonis.com/role/GeographicInformationandMajorCustomerDataLonglivedAssetsbyGeographicRegionDetails" xlink:type="simple" xlink:href="vrns-20231231.xsd#GeographicInformationandMajorCustomerDataLonglivedAssetsbyGeographicRegionDetails"/>
<link:definitionLink xlink:role="http://varonis.com/role/GeographicInformationandMajorCustomerDataLonglivedAssetsbyGeographicRegionDetails" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_91fbe90f-dbdd-4f8d-b31e-335765bc7ddf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_71f6f0c8-aa88-4e2f-9792-7764e4b3b652" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_91fbe90f-dbdd-4f8d-b31e-335765bc7ddf" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_71f6f0c8-aa88-4e2f-9792-7764e4b3b652" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_5336993e-41c9-4aeb-89f5-998f51c7120d" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_71f6f0c8-aa88-4e2f-9792-7764e4b3b652" xlink:to="loc_srt_StatementGeographicalAxis_5336993e-41c9-4aeb-89f5-998f51c7120d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_5336993e-41c9-4aeb-89f5-998f51c7120d_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_5336993e-41c9-4aeb-89f5-998f51c7120d" xlink:to="loc_srt_SegmentGeographicalDomain_5336993e-41c9-4aeb-89f5-998f51c7120d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_d8e0ce3c-ccf9-47c5-9887-cb6ef1dc213e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_5336993e-41c9-4aeb-89f5-998f51c7120d" xlink:to="loc_srt_SegmentGeographicalDomain_d8e0ce3c-ccf9-47c5-9887-cb6ef1dc213e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_country_US_4cf53245-7f05-434f-96fe-27a74754ff06" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d8e0ce3c-ccf9-47c5-9887-cb6ef1dc213e" xlink:to="loc_country_US_4cf53245-7f05-434f-96fe-27a74754ff06" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_country_IL_fc3521fc-9b17-4b1b-a64c-f885841fdaa8" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_IL"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d8e0ce3c-ccf9-47c5-9887-cb6ef1dc213e" xlink:to="loc_country_IL_fc3521fc-9b17-4b1b-a64c-f885841fdaa8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_country_IE_5e76116d-74d9-4f15-b6fd-1da7d18a3184" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_IE"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d8e0ce3c-ccf9-47c5-9887-cb6ef1dc213e" xlink:to="loc_country_IE_5e76116d-74d9-4f15-b6fd-1da7d18a3184" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_OtherMember_f443fa72-e56c-4fd7-8e70-f3770bbf93fb" xlink:href="vrns-20231231.xsd#vrns_OtherMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d8e0ce3c-ccf9-47c5-9887-cb6ef1dc213e" xlink:to="loc_vrns_OtherMember_f443fa72-e56c-4fd7-8e70-f3770bbf93fb" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_0f128b6f-2b0b-4af5-bb29-6fe4d9ebcd16" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_71f6f0c8-aa88-4e2f-9792-7764e4b3b652" xlink:to="loc_us-gaap_DebtInstrumentAxis_0f128b6f-2b0b-4af5-bb29-6fe4d9ebcd16" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_0f128b6f-2b0b-4af5-bb29-6fe4d9ebcd16_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_0f128b6f-2b0b-4af5-bb29-6fe4d9ebcd16" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_0f128b6f-2b0b-4af5-bb29-6fe4d9ebcd16_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5c416883-6dd2-438e-b9b9-adddbe2bba7f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_0f128b6f-2b0b-4af5-bb29-6fe4d9ebcd16" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5c416883-6dd2-438e-b9b9-adddbe2bba7f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_7ba32ab6-5adb-454a-999a-1bb66994d44c" xlink:href="vrns-20231231.xsd#vrns_TwoThousandAndTwentyFiveSeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5c416883-6dd2-438e-b9b9-adddbe2bba7f" xlink:to="loc_vrns_TwoThousandAndTwentyFiveSeniorNotesMember_7ba32ab6-5adb-454a-999a-1bb66994d44c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncurrentAssets_dd1d67d0-e7bf-481f-94c6-a2d3a559d29d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NoncurrentAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_91fbe90f-dbdd-4f8d-b31e-335765bc7ddf" xlink:to="loc_us-gaap_NoncurrentAssets_dd1d67d0-e7bf-481f-94c6-a2d3a559d29d" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-roles-2023.xsd#eedm"/>
<link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfAdoptionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfAdoptionMember"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdate202006Member" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccountingStandardsUpdate202006Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember" xlink:to="loc_us-gaap_AccountingStandardsUpdate202006Member" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities" xlink:type="arc" order="1"/>
</link:definitionLink>
</link:linkbase>


2 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 5/07/24  Varonis Systems Inc.              10-Q        3/31/24   62:6.2M                                   Workiva Inc Wde… FA01/FA
 2/06/24  Varonis Systems Inc.              S-8         2/06/24    4:111K                                   EdgarAgents LLC/FA


15 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 8/01/23  Varonis Systems Inc.              10-Q        6/30/23   67:7.3M                                   Workiva Inc Wde… FA01/FA
 6/07/23  Varonis Systems Inc.              8-K:5,9     6/05/23   11:317K                                   Broadridge Fin’l So… Inc
 2/07/23  Varonis Systems Inc.              10-K       12/31/22   93:18M                                    Workiva Inc Wde… FA01/FA
 5/03/22  Varonis Systems Inc.              10-Q        3/31/22   63:6.7M                                   Workiva Inc Wde… FA01/FA
 2/08/22  Varonis Systems Inc.              10-K       12/31/21   96:10M                                    Workiva Inc Wde… FA01/FA
 5/11/20  Varonis Systems Inc.              8-K:1,2,3,9 5/06/20   14:1.5M                                   Workiva Inc Wde… FA01/FA
 6/26/19  Varonis Systems Inc.              8-K:5,9     6/25/19    4:196K                                   Globenewswire Inc./FA
 2/12/19  Varonis Systems Inc.              10-K       12/31/18   79:10M                                    Workiva Inc Wde… FA01/FA
 8/31/18  Varonis Systems Inc.              8-K:5,9     8/27/18    4:52K                                    Globenewswire Inc./FA
 3/26/15  Varonis Systems Inc.              DEF 14A     5/05/15    1:296K                                   Donnelley … Solutions/FA
 8/06/14  Varonis Systems Inc.              10-Q        6/30/14   53:3.6M                                   Donnelley … Solutions/FA
 5/08/14  Varonis Systems Inc.              10-Q        3/31/14   55:3.3M                                   Donnelley … Solutions/FA
 3/18/14  Varonis Systems Inc.              S-8         3/18/14    4:155K                                   Donnelley … Solutions/FA
 2/18/14  Varonis Systems Inc.              S-1/A                 11:3.9M                                   Donnelley … Solutions/FA
10/22/13  Varonis Systems Inc.              S-1¶                   9:6.1M                                   Donnelley … Solutions/FA
Top
Filing Submission 0001628280-24-003498   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Fri., May 17, 2:43:18.2pm ET