Startup profile · funding coverage
Adaptive Security
AI-native platform to prevent social-engineering attacks — deepfakes, vishing, and smishing.
Stage
series b
Status
private
Coverage
full
Why Adaptive Security is interesting
Founded by Attentive veterans after OpenAI's first cybersecurity bet; simulates AI-powered attacks to train employees before real breaches.
Key facts
- Series B (Dec 2025): $81M led by Bain Capital Ventures; a16z participated (Adaptive press)
- Series A (Apr 2025): $43M co-led by a16z and OpenAI Startup Fund; Eniac participated (Adaptive blog)
- Co-investors not in VCT directory: Bain Capital Ventures, OpenAI Startup Fund, NVIDIA NVentures, Abstract Ventures
Investors in our directory
Funds linked from Adaptive Security's profile — open a fund page for stage focus and related deal articles.
Industries
Cybersecurity AI & Machine Learning Enterprise SaaS
Industry hub pages are rolling out from our fund-derived baseline taxonomy.
Related funding articles
Venture Capital Tracker pieces that cover Adaptive Security's financing or category context.
FAQs about Adaptive Security
Funding context and why this company shows up in venture coverage.
Adaptive Security simulates AI-powered attacks (deepfake calls, SMS phishing, spoofed emails) to train employees and triage suspicious messages — replacing static annual compliance training.
Andreessen Horowitz co-led the $43M Series A (Apr 2025) with the OpenAI Startup Fund. Directory-linked investor Eniac Ventures (/fund/eniac-ventures) also participated. Bain Capital Ventures led the $81M Series B (Dec 2025).
Adaptive raised $43M Series A (Apr 2025) and $81M Series B (Dec 2025) and remains private.
AI makes impersonation attacks cheap at scale. Adaptive's founders (ex-Attentive) built multi-channel simulations to close the gap between legacy phishing tests and real deepfake threats.
No — Adaptive Security remains private as of July 2026.
Last updated: 2026-07-24