| November 2021 | IK Partners acquired TruesecProvides cybersecurity services including risk assessments, penetration testing and threat detection | MSSP, Managed security services | Undisclosed | Report on IK Partners buying Truesec, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Ideagen acquired CompliSpaceProvides governance, risk, compliance and policy management software for education and social care | GRC, GRC and compliance automation | $76m | Report on Ideagen buying CompliSpace, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Ideagen acquired CompliancePath | GRC, GRC and compliance automation | $12m | Report on Ideagen buying CompliancePath, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | IBM acquired ReaQtaDevelops autonomous threat detection and response technology | EDR, EDR and XDR | Undisclosed | Report on IBM buying ReaQta, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | General Informatics acquired Versiant | | Undisclosed | Report on General Informatics buying Versiant, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | GBG acquired AcuantProvides trusted identity products and identity verification | Fraud prevention, Fraud and payment fraud prevention | $736m | Report on GBG buying Acuant, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Entreda acquired PrivvaSpecialises in enterprise risk management | TPRM, Third-party risk and security ratings | Undisclosed | Report on Entreda buying Privva, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | DomainTools acquired Farsight SecuritySpecialises in DNS-based threat intelligence | Threat intel, Threat intelligence | Undisclosed | Report on DomainTools buying Farsight Security, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | DNV acquired Applied RiskIndustrial cybersecurity company | OT security, OT and ICS security | Undisclosed | Report on DNV buying Applied Risk, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | CrowdStrike acquired SecureCircleProvides SaaS service extending zero trust security to endpoint data | DLP, Data loss prevention | Undisclosed | Report on CrowdStrike buying SecureCircle, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Coinbase acquired Unbound SecurityIsraeli startup protecting cryptographic keys and credentials | Encryption, Encryption and key management | $150m | Report on Coinbase buying Unbound Security, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Clearlake Capital acquired Quest SoftwareMakes software for security, data insight and running IT | | $5.4bn | Report on Clearlake Capital buying Quest Software, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Cipherpoint acquired Virtual Information Technology Pty Limited (VIT Cyber Security)Australian provider of managed IT and security solutions | MSSP, Managed security services | $1m | Report on Cipherpoint buying Virtual Information Technology Pty Limited (VIT Cyber Security), November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Cerberus Sentinel acquired Atlantic Technology Systems | | Undisclosed | Report on Cerberus Sentinel buying Atlantic Technology Systems, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Celsius Network acquired GK8Israeli blockchain cybersecurity firm protecting financial institutions' digital assets | Encryption, Encryption and key management | $115m | Report on Celsius Network buying GK8, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Celcom Axiata Berhad acquired BridgenetMalaysian provider of IT and managed security services | MSSP, Managed security services | Undisclosed | Report on Celcom Axiata Berhad buying Bridgenet, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Cegeka acquired SecurITIdentity and access management specialist based in Amsterdam | IAM, Identity and access management | Undisclosed | Report on Cegeka buying SecurIT, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | Buchanan & Edwards acquired RenXTechProvides cybersecurity and technical analysis services to the US government | MSSP, Managed security services | Undisclosed | Report on Buchanan & Edwards buying RenXTech, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| November 2021 | BlueHalo acquired AsymmetrikTechnology and analytics firm providing cybersecurity to government organisations | Consulting, Security consulting and vCISO | Undisclosed | Report on BlueHalo buying Asymmetrik, November 2021 (opens in a new tab) |
| November 2021 | Appsian Security acquired Q SoftwareSpecialises in security and compliance for JD Edwards and Oracle ERP systems | GRC, GRC and compliance automation | Undisclosed | Report on Appsian Security buying Q Software, November 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Xperience acquired Green DuckCloud and cybersecurity company with services focused on assessment | Consulting, Security consulting and vCISO | Undisclosed | Report on Xperience buying Green Duck, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | WidePoint acquired IT AuthoritiesManaged service provider, managed security service provider and cloud service provider | MSSP, Managed security services | Undisclosed | Report on WidePoint buying IT Authorities, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | TransUnion acquired SontiqProvides identity security and identity monitoring products using credit data | ITDR, Identity threat detection and response | $638m | Report on TransUnion buying Sontiq, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Tetra Tech acquired Enterprise AutomationAdvises on and builds factory control and automation systems | OT security, OT and ICS security | Undisclosed | Report on Tetra Tech buying Enterprise Automation, October 2021 (opens in a new tab) |
| October 2021 | SystemLabs acquired RedCoinCybersecurity firm offering security services and products | MSSP, Managed security services | Undisclosed | Report on SystemLabs buying RedCoin, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Sysnet Global Solutions acquired TrustwaveSpecialises in PCI compliance for payment card industry standards | GRC, GRC and compliance automation | $80m | Report on Sysnet Global Solutions buying Trustwave, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | SUSE acquired NeuVectorMakes container security software for Kubernetes environments | CWPP, Cloud workload and container security | $130m | Report on SUSE buying NeuVector, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Summit Partners acquired Invicti SecuritySells application security testing software | AST, Application security testing | $625m | Report on Summit Partners buying Invicti Security, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Sollensys acquired CeleritIT services business serving the financial sector since 1985 | | Undisclosed | Report on Sollensys buying Celerit, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Sollensys acquired Abstract MediaAugmented and virtual reality company for corporate training experiences | | Undisclosed | Report on Sollensys buying Abstract Media, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Snyk acquired CloudSkiffFrench cloud security firm behind open source drift detection tool driftctl | CWPP, Cloud workload and container security | Undisclosed | Report on Snyk buying CloudSkiff, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | SIA acquired Net StudioItalian company selling digital identity and access management | IAM, Identity and access management | Undisclosed | Report on SIA buying Net Studio, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Scanmarket acquired SymfactSoftware for managing contracts and supplier danger, using AI, aimed at lawyers | TPRM, Third-party risk and security ratings | Undisclosed | Report on Scanmarket buying Symfact, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | RealDefense acquired STOPzillaCreates virus protection and speed-up tools for home users and small firms | EPP, Endpoint protection and antivirus | Undisclosed | Report on RealDefense buying STOPzilla, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Plurilock acquired CloudCodesIndia-based cloud security firm providing cloud security products | CNAPP, Cloud security (CNAPP and CSPM) | $1.7m | Report on Plurilock buying CloudCodes, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Onfido acquired EYNUK biometric technology company making acoustic liveness technology | | Undisclosed | Report on Onfido buying EYN, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | One Identity acquired OneLoginOneLogin sells identity and access management software. | IAM, Identity and access management | Undisclosed | Report on One Identity buying OneLogin, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Netwrix acquired PolicyPak | | Undisclosed | Report on Netwrix buying PolicyPak, October 2021 (opens in a new tab)via Wikipedia (opens in a new tab) |
| October 2021 | Microsoft acquired Two HatContent moderation provider protecting online communities from harmful content | | Undisclosed | Report on Microsoft buying Two Hat, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | KnowBe4 acquired SecurityAdvisorProvides awareness training and insights into human behaviour | Awareness training, Security awareness and human risk | $80m | Report on KnowBe4 buying SecurityAdvisor, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Keysight Technologies acquired SCALABLE Network TechnologiesOffers tools to imitate networks and simulate online dangers | | Undisclosed | Report on Keysight Technologies buying SCALABLE Network Technologies, October 2021 (opens in a new tab) |
| October 2021 | Kaspersky acquired Brain4NetSpecialises in networking solutions for communications networks | | Undisclosed | Report on Kaspersky buying Brain4Net, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | JPX Global acquired VeeMost TechnologiesProvides cloud and cybersecurity solutions | | Undisclosed | Report on JPX Global buying VeeMost Technologies, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | INE acquired Pentester AcademyCloud-based hands-on lab platform for cyber security training | Awareness training, Security awareness and human risk | Undisclosed | Report on INE buying Pentester Academy, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | HSB acquired ZeguroCybersecurity platform offering risk management services for small businesses | | Undisclosed | Report on HSB buying Zeguro, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | HelpSystems acquired PhishLabsThreat intelligence company providing cybersecurity intelligence services | Threat intel, Threat intelligence | Undisclosed | Report on HelpSystems buying PhishLabs, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | HelpSystems acquired Digital GuardianSpecialises in data loss prevention technology | DLP, Data loss prevention | Undisclosed | Report on HelpSystems buying Digital Guardian, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Forcepoint acquired BitglassProvides security service edge platform for secure access and data protection | SASE, SASE and SSE | Undisclosed | Report on Forcepoint buying Bitglass, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Deloitte acquired Sliced TechRuns secure cloud services for government bodies | MSSP, Managed security services | Undisclosed | Report on Deloitte buying Sliced Tech, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Dataminr acquired KrizoEnterprise crisis response platform | IR, Incident response | Undisclosed | Report on Dataminr buying Krizo, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |