| December 2021 | ZeroFox acquired IDXProvides incident response services to organisations | Undisclosed | Report on ZeroFox buying IDX, December 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Dataminr acquired KrizoEnterprise crisis response platform | Undisclosed | Report on Dataminr buying Krizo, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| October 2021 | Chainalysis acquired ExcygentProfessional services firm helping with cybercrime investigations for public and private sectors | Undisclosed | Report on Chainalysis buying Excygent, October 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| September 2021 | Consilio acquired Adecco GroupLegal consulting and eDiscovery business unit of Special Counsel | Undisclosed | Report on Consilio buying Adecco Group, September 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| September 2021 | Booz Allen Hamilton acquired TracepointFirm handling digital evidence gathering and response to breaches | Undisclosed | Report on Booz Allen Hamilton buying Tracepoint, September 2021 (opens in a new tab) |
| August 2021 | BreachQuest acquired Rendition InfosecWorks on digital evidence, breach handling, checks and finding weaknesses | Undisclosed | Report on BreachQuest buying Rendition Infosec, August 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| July 2021 | BlueVoyant acquired Marclay AssociatesBritish advisory firm handling breaches and cyber enquiries | Undisclosed | Report on BlueVoyant buying Marclay Associates, July 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| June 2021 | eSentire acquired CyFIRMakes tools for digital forensics and investigations | Undisclosed | Report on eSentire buying CyFIR, June 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| April 2021 | Rapid7 acquired VelociraptorOpen source endpoint monitoring, forensics and incident response tech | Undisclosed | Report on Rapid7 buying Velociraptor, April 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| April 2021 | Everbridge acquired xMattersProvides incident response and management services | $240m | Report on Everbridge buying xMatters, April 2021 (opens in a new tab) |
| March 2021 | CFC acquired Insane TechnologiesProvides cybersecurity and incident response services | Undisclosed | Report on CFC buying Insane Technologies, March 2021 (opens in a new tab)via SecurityWeek (opens in a new tab) |
| December 2020 | TCDI acquired Cicayda LLCeDiscovery, cybersecurity and managed document review software and services | Undisclosed | Report on TCDI buying Cicayda LLC, December 2020 (opens in a new tab)via Cybersecurity Ventures (opens in a new tab) |
| August 2020 | Palo Alto Networks acquired Crypsis GroupIncident response, risk management and digital forensics consulting firm | $265m | Report on Palo Alto Networks buying Crypsis Group, August 2020 (opens in a new tab)via Wikipedia (opens in a new tab) |
| February 2020 | Aon acquired CytelligenceA firm handling breach response and computer evidence work | Undisclosed | Report on Aon buying Cytelligence, February 2020 (opens in a new tab)via Cybersecurity Ventures (opens in a new tab) |
| January 2020 | Kroll acquired RP Digital SecurityA computer forensics firm | Undisclosed | Report on Kroll buying RP Digital Security, January 2020 (opens in a new tab)via Cybersecurity Ventures (opens in a new tab) |
| January 2020 | Cellebrite acquired BlackBag TechnologiesBuilds tools for investigating cyber attacks and handling their aftermath | Undisclosed | Report on Cellebrite buying BlackBag Technologies, January 2020 (opens in a new tab)via Cybersecurity Ventures (opens in a new tab) |