How much did Adaptive Security raise in its Series B?

Adaptive Security raised $81M in a Series B announced on 16 December 2025.

Who invested in Adaptive Security's Series B?

The round was led by Bain Capital Ventures, Abstract, Andreessen Horowitz, Capital One Ventures, Citi Ventures, NVentures, OpenAI Startup Fund.

What does Adaptive Security do?

Adaptive Security is a cybersecurity company specializing in Human Risk, founded in 2023 and headquartered in New York, United States.

Funding record · 2025 / 12

Adaptive Security raises $81M Series B for human risk

Announced 16 December 2025 · Recorded 8 September 2026 · Last verified 8 September 2026

Adaptive Security, a human risk company based in New York, United States, raised $81M in a Series B announced on 16 December 2025, led by Bain Capital Ventures, Abstract and Andreessen Horowitz with 4 others. Its disclosed equity funding is now $179M across 3 rounds.

Amount: $81M
Round: Series B
Announced: 16 December 2025
Lead investors: Bain Capital Ventures, Abstract, Andreessen Horowitz, Capital One Ventures, Citi Ventures, NVentures, OpenAI Startup Fund
Sources on record: 1prnewswire.com

From the source

Adaptive Security Raises $81 Million Series B to Stop AI-Powered Cyber Threats

Adaptive Security announced an $81 million Series B funding round led by Bain Capital Ventures, with participation from NVentures (NVIDIA's venture capital arm), OpenAI Startup Fund, Andreessen Horowitz (a16z), Abstract Ventures, Capital One Ventures, and Citi Ventures. The funding reflects rising investor and customer concern over AI-powered cyber threats, with more than half of Adaptive's customer discussions including reports of deepfake incidents.

prnewswire.com · 16 December 2025 ↗

The Mandos read

What the record says about Adaptive Security

Momentum 73 / 100 · Acceleratinglocked →
pillars in the platform
237 employees · up 8% last month · 17 open roleslocked →
history and breakdowns in the platform
Exit Readiness: Lowlocked →
Tested against 751 past exits in the Mandos record: 43% sat in Watch or Elevated 2 years before. Companies in Elevated exited at 3.1× the record's rate.
Buyers most often compare Adaptive Security with NINJIO, Arsen and Fortra and 52 morelocked →
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Funding history

Adaptive Security funding on record

Adaptive Security has raised $179M in priced equity. Its most recent round was a Series B in December 2025.

Latest round on record: Series B, Dec 2025.

Adaptive Security funding on the profile →

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FAQ

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How much did Adaptive Security raise in its Series B?: Adaptive Security raised $81M in a Series B announced on 16 December 2025.
Who invested in Adaptive Security's Series B?: The round was led by Bain Capital Ventures, Abstract, Andreessen Horowitz, Capital One Ventures, Citi Ventures, NVentures, OpenAI Startup Fund.
What does Adaptive Security do?: Adaptive Security is a cybersecurity company specializing in Human Risk, founded in 2023 and headquartered in New York, United States.