cybersecdirectory

OT and ICS security acquisitions and funding

35 acquisitions of OT security vendors since 2020 and 51 funding rounds since 2022 on record. The most active buyers are Accenture (2), OPSWAT (2) and Rockwell Automation (2). See the OT security vendors in the directory.

35acquisitions
$2.9bnpaid in the 5 acquisitions with a disclosed price
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Showing 1 to 35 of 35

DateDealAmountSource
September 2026Aiuken Cybersecurity acquired 4ElitechSpanish specialist in industrial and critical infrastructure cybersecurityUndisclosedReportvia SecurityWeek
August 2026Systematic Growth acquired 4SecureDevelops software for secure information exchange in classified environmentsUndisclosedReportvia SecurityWeek
June 2026Nexus IT acquired TecServ IncIndustrial technology services firm serving operational technology environmentsUndisclosedReportvia SecurityWeek
June 2026Accenture acquired DragosDragos provides cybersecurity for industrial control systems and operational technology environments.UndisclosedReportvia SecurityWeek
April 2026Everfield acquired Landis+GyrBuilds systems that spot break-ins and odd behaviour on industrial networksUndisclosedReportvia SecurityWeek
April 2026ABS acquired RMC GlobalProvides industrial cybersecurity, risk management and resiliency solutionsUndisclosedReportvia SecurityWeek
September 2025Seclab acquired SeckiotUndisclosedReportvia SecurityWeek
September 2025Mitsubishi Electric acquired Nozomi NetworksNozomi Networks provides OT and IoT security solutions for critical infrastructure, offering asset visibility and threat detection.$883mReportvia SecurityWeek
March 2025RMC Global acquired Shearer and AssociatesEngineering and cybersecurity firm for defence and critical infrastructure projectsUndisclosedReportvia SecurityWeek
March 2025Integrity360 acquired HoliseumFrench firm providing OT and IoT security servicesUndisclosedReportvia SecurityWeek
March 2025Armis acquired OtorioOperational technology and cyber-physical systems security solutionsUndisclosedReportvia SecurityWeek
December 2024OPSWAT acquired FendSecures operational technology against cyber threats using data diodes and unidirectional gatewaysUndisclosedReportvia SecurityWeek
November 2024ServiceNow acquired Mission SecureGives industrial sites trust-free protection built for operational technologyUndisclosedReportvia SecurityWeek
November 2024Belden and Hirschmann Automation and Control acquired VoleatechGerman firm making OT cybersecurity solutions, particularly firewalls$6mReportvia SecurityWeek
July 2024Sword Group acquired IACS ConsultingCyber security consultancy for industrial automation and operational technology environmentsUndisclosedReportvia SecurityWeek
July 2024Marlink acquired DivertoKeeps business and industrial systems safe from digital attacksUndisclosedReportvia SecurityWeek
July 2024Accenture acquired True North SolutionsIndustrial engineering solutions for operational technology in energy and miningUndisclosedReportvia SecurityWeek
April 2024RMC acquired SecuriconFirm guarding both business systems and industrial control networksUndisclosedReportvia SecurityWeek
October 2023Rockwell Automation acquired Verve IndustrialCybersecurity for industrial control systems and operational technologyUndisclosedReportvia SecurityWeek
September 2023Sapphire acquired AwenReduces cyber risks in operational technology systems for UK organisationsUndisclosedReportvia SecurityWeek
July 2023Honeywell acquired SCADAfenceIsraeli firm providing operational technology and IoT securityUndisclosedReportvia SecurityWeek
April 2023Parsons acquired IPKeys Power PartnersSupplier of digital defence and tech to towns and power companies$43mReportvia SecurityWeek
April 2023Frequentis acquired FrafosProtection products for internet phone callsUndisclosedReportvia SecurityWeek
August 2022GrayMatter acquired HTSEProvides process automation and machine control for industrial firmsUndisclosedReportvia SecurityWeek
April 2022Sabanci Group acquired RadiflowRadiflow provides cyber security and risk management solutions for operational technology and industrial networks.$45mReportvia SecurityWeek
April 2022Red Lion Controls acquired MB connect lineSafe distant entry, linked factory devices and plant protection offerings for manufacturingUndisclosedReportvia SecurityWeek
April 2022Inframark acquired BLTIProvides industrial automation solutions for water and wastewater facilitiesUndisclosedReportvia SecurityWeek
November 2021DNV acquired Applied RiskIndustrial cybersecurity companyUndisclosedReportvia SecurityWeek
October 2021Tetra Tech acquired Enterprise AutomationAdvises on and builds factory control and automation systemsUndisclosedReport
August 2021Deloitte acquired Applied Engineering SolutionsThe arm of Applied Engineering Solutions dealing with factory cyber protectionUndisclosedReportvia SecurityWeek
July 2021OPSWAT acquired Bayshore NetworksProvides industrial cybersecurity products for operational technology environmentsUndisclosedReportvia SecurityWeek
February 2021Landis+Gyr acquired RheboThe firm works on keeping factories safe and their machinery runningUndisclosedReportvia SecurityWeek
November 2020Hexagon AB acquired PAS Global LLCProvides cybersecurity for industrial process and power operationsUndisclosedReportvia Cybersecurity Ventures
October 2020Rockwell Automation acquired OyloProvides industrial control system cybersecurity services and solutionsUndisclosedReportvia Cybersecurity Ventures
February 2020Advent International and Crosspoint Capital Partners acquired Forescout TechnologiesForescout provides a platform for managing cyber risk and mitigating threats across IT, OT, IoT, and IoMT devices.$1.9bnReportvia Cybersecurity Ventures

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.