Adaptive Security raises $81 million in Series B funding led by Bain Capital Ventures to combat AI-powered cyber threats.
Amount Raised
$81 Million
Round Type
Series B
New YorkArtificial IntelligenceSecurityCyber SecurityMachine LearningNetwork SecurityInvestors
Description
Adaptive Security announced it has raised $81 million in a Series B funding round led by Bain Capital Ventures with participation from NVentures, OpenAI Startup Fund, and others. This is the company's third financing announcement this year, totaling $146.5 million raised. Their growth is driven by rising concerns over AI-powered cyber threats. Adaptive has rapidly expanded to over 500 enterprise customers since its launch in January 2025.
Quick answer
Adaptive Security raised $81 Million in a Series B round, dated December 16, 2025. Investors: Citi Ventures, Capital One Ventures, NVentures, Abstract Ventures, OpenAI Startup Fund, Andreessen Horowitz and Bain Capital Ventures. Adaptive Security is based in New York, New York, United States.
- How much did Adaptive Security raise?
- Adaptive Security raised $81 Million in a Series B round on December 16, 2025.
- Who invested in Adaptive Security?
- Citi Ventures, Capital One Ventures, NVentures, Abstract Ventures, OpenAI Startup Fund, Andreessen Horowitz and Bain Capital Ventures are named as investors in this round.
- What does Adaptive Security do?
- Adaptive Security is OpenAI’s investment for AI cyber threats.
- Where is Adaptive Security based and how big is it?
- Adaptive Security is based in New York, New York, United States. Fundz records about 160 employees.
- Who are the decision-makers at Adaptive Security?
- Fundz holds 1 contact at Adaptive Security. Names and contact details are shown to Fundz members.
Source: Fundz verified event record.
Who else raised in Security and Cyber Security around the same time
Companies in the same sectors as Adaptive Security that raised within 45 days of this round, from Fundz verified event records.
- Asymmetric Security raised $4.2M (Pre-Seed) on January 21, 2026.
- Furl raised $10M (Seed) on January 21, 2026.
- Dam Secure raised $4M (Seed) on January 20, 2026.
- Zepo Intelligence raised $15M (Seed) on January 12, 2026.
- Gambit Cyber raised $3.4M (Seed) on December 17, 2025.
- CurlSek raised an undisclosed amount (Angel) on December 15, 2025.
Who to call at Adaptive Security, and when
A new round usually means Adaptive Security is about to hire and buy. The teams that reach out first get the meeting.
- An alert the day Adaptive Security raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at Adaptive Security, from your own LinkedIn network
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Funding Insights
What this usually meansAdaptive Security raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.
145 of these a day, filtered to the companies you pick, with the decision-maker attached.
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