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.

5acquisitions
$883mpaid in the 1 acquisition with a disclosed price
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Showing 1 to 5 of 5

DateDealAmountSource
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

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.