cybersecdirectory

AI and LLM security acquisitions and funding

44 acquisitions of AI security companies since 2020 and 173 funding rounds since 2022 on record. The most active buyers are Palo Alto Networks (3), Check Point (3) and F5 (2). See the AI security companies in the directory.

47funding rounds
$1.1bnraised in the 43 rounds with a disclosed size
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Showing 1 to 47 of 47

DateDealAmountSource
14 Oct 2026Harmonic Security raised a Series B roundHarmonic Security provides software that discovers, classifies and controls how employees use AI tools at work.Investor Crosspoint Capital Partners$50mReport
October 2026Ring Zero Security received non-equity supportInvestor DraperU IndiaUndisclosedReportvia Security, Funded
29 Sept 2026Reco raised a Series B roundReco provides an AI agent security platform that maps, governs, and protects AI agents across enterprise applications.Investors AT&T Ventures, Forestay and Quadrille Capital$55mReportvia Security, Funded
3 Sept 2026HiddenLayer raised a Series B roundHiddenLayer provides a security platform for AI applications, protecting against adversarial threats.Investors Delta-v Capital, Ten Eleven Ventures, Morgan Stanley, M12 and Booz Allen Ventures$100mReport
September 2026Outerlimit raised a pre-seed roundOuterlimit provides a security and authorization layer for agentic AI systems.Investor AlbionVC$16mReportvia Security, Funded
September 2026Kontext raised a pre-seed roundInvestor 42CAP$4mReportvia Security, Funded
September 2026Eve Security raised a seed roundInvestor Run Ventures$4.5mReportvia Security, Funded
September 2026AIUC raised a Series A roundSets standards, audits and insures frontier AI systems and agents for security, safety and reliability.Investor Ribbit Capital$40mReportvia Security, Funded
September 2026Reality Defender raised a corporate roundReality Defender provides deepfake detection to stop AI-generated media from causing harm.Investor KPMGUndisclosedReportvia Security, Funded
September 2026Lasso Security raised a seed roundLasso Security provides a platform to secure AI agents and applications at enterprise scale.Investor ClearSky$30mReportvia Security, Funded
September 2026AI Score raised a seed roundInvestor Fuel Ventures$5.4mReportvia Security, Funded
August 2026Opgate raised a pre-seed round$60kReportvia Security, Funded
August 2026Xpander.ai raised a seed roundInvestor PICO Venture Partners$7.5mReportvia Security, Funded
August 2026Velatir raised a seed roundInvestors Spintop Ventures and Ugly Duckling Ventures$5.8mReportvia Security, Funded
August 2026Mindgard raised a Series A roundInvestor Album VC$30mReportvia Security, Funded
August 2026Zenity raised a Series C roundZenity provides security and governance for AI agents and low-code applications.Investor Norwest$115mReportvia Security, Funded
August 2026Actualyze AI raised a seed roundInvestors Storm Ventures, Canaan Partners, Morado Ventures and AME Cloud Ventures$7mReportvia Security, Funded
July 2026Onyx Security raised a Series B roundInvestor Bessemer Venture Partners$113mReportvia Security, Funded
July 2026Cantina raised fundingCantina provides an agentic security platform that uses autonomous AI agents to detect, respond to, and fix security issues.Investor Framework Ventures$8mReportvia Security, Funded
July 2026Arrakis Security raised a seed roundInvestor Hetz Ventures$8mReportvia Security, Funded
July 2026Straiker raised a Series A roundStraiker provides security teams with tools to discover, test, and defend AI agents in enterprises.Investors Citi Ventures, Illuminate Financial, Marathon Management Partners and Workday Ventures$64mReportvia Security, Funded
June 2026Runlayer raised a Series A roundInvestor Felicis$30mReportvia Security, Funded
June 2026Tenet Security raised a seed roundInvestors MizMaa Ventures and The Westly Group$6mReportvia Security, Funded
June 2026Silmaril raised a pre-seed roundInvestor Y Combinator$500kReportvia Security, Funded
June 2026NeuralTrust raised a seed roundInvestor Alstin Capital$20mReportvia Security, Funded
June 2026Clawvisor raised a pre-seed roundInvestor Y Combinator$500kReportvia Security, Funded
June 2026Willow raised a seed roundInvestor Hetz Ventures$7mReportvia Security, Funded
June 2026Archestra.AI raised a seed roundInvestor The Twenty Minute VC$10mReportvia Security, Funded
May 2026Gray Swan raised a Series A roundInvestors Madrona and Wing Venture Capital$40mReportvia Security, Funded
May 2026Geordie AI raised a Series A roundInvestor Balderton Capital$30mReportvia Security, Funded
May 2026Zealot raised a seed roundInvestor Khosla VenturesUndisclosedReport
April 2026Capsule Security raised a seed roundCapsule Security provides a runtime security platform that monitors and intervenes in AI agent behavior.Investors Forgepoint Capital International and LAMA Partners (fka FXP)$7mReportvia Security, Funded
April 2026Almure raised a seed roundInvestors Dual Bridge Capital, Genesia Ventures and NEX-T Tokai Innovation Fund$1.3mReportvia Security, Funded
April 2026Trent AI raised a seed roundProvides an AI security engineer that finds and fixes software risks using coding agents.Investors LocalGlobe and Cambridge Innovation Capital$13mReportvia Security, Funded
April 2026Aim Intelligence raised a Series A roundInvestor Samsung Venture Investment$6.7mReportvia Security, Funded
March 2026CodeIntegrity raised a seed round$4.8mReportvia Security, Funded
March 2026Onyx Security raised a Series A roundInvestor Conviction VC$40mReportvia Security, Funded
March 2026JetStream Security raised a seed roundInvestor Redpoint$34mReportvia Security, Funded
February 2026Trustwise AI raised funding$12.1mReportvia Security, Funded
February 2026Evoke Security raised a pre-seed roundInvestor Crosspoint Capital Partners$4mReportvia Security, Funded
February 2026Reco raised a Series B roundReco provides an AI agent security platform that maps, governs, and protects AI agents across enterprise applications.Investor Zeev Ventures$30mReportvia Security, Funded
February 2026Realm Labs raised a seed roundInvestor RSA Conference$5mReportvia Security, Funded
February 2026Opaque Systems raised a Series B roundProvides a trust layer that lets organisations run AI on sensitive data with hardware-enforced governance and verifiable proof.Investor Walden Catalyst$24mReportvia Security, Funded
February 2026Geordie AI raised a seed roundInvestor RSA Conference$5mReportvia Security, Funded
January 2026Pallma AI raised a pre-seed roundInvestor Marathon Venture Capital$1.6mReportvia Security, Funded
January 2026Nenna AI raised a seed roundInvestors dfv Mediengruppe and IBB VenturesUndisclosedReportvia Security, Funded
January 2026WitnessAI raised fundingInvestor Sound Ventures$58mReportvia Security, Funded

Acquisitions come from SecurityWeek's monthly M&A round-ups from 2021 onwards, from Cybersecurity Ventures' quarterly M&A reports for 2020, and a few from Wikipedia lists. Funding rounds from 2022 onwards come from Return on Security's weekly Security, Funded newsletter. These are dated to the month. A few deals added from the news are dated to the day. Smaller deals may be missing. Each Report link goes to the announcement or story the source cites, and the via link to the round-up or newsletter issue. Amounts are in US dollars. The category is what the bought or funded company sells.