Adaptive Security
PrivateLast Round
Series B
Dec 16, 2025
Total Funding Raised
$201.5M
Momentum Score
50 /100
Company Overview
Adaptive Security is a venture-backed cybersecurity company that develops a platform to protect organizations from AI-powered social engineering attacks, including deepfakes, voice phishing (vishing), and generative AI phishing. The platform provides next-generation security awareness training, AI attack simulations, real-time threat triage, and AI-driven risk scoring. Founded in early 2023 by Brian Long and Andrew Jones, the company is headquartered in New York City. In April 2025, Adaptive Security announced a $43 million funding round led by Andreessen Horowitz (a16z) and the OpenAI Startup Fund, which was OpenAI's first investment in a cybersecurity company. The company serves clients across various sectors, including finance, healthcare, and technology.
Sector
Cybersecurity
Verticals
Email Security, Compliance & Risk, Threat Intelligence, Incident Response, NLP & Conversational AI
Business Model
B2B
Customer Profile
Subscription SaaS, Services & Consulting
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Adaptive Security Comps
Public and private peers based on sector, stage, and business model.
Adaptive Security Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series B | Dec 16, 2025 | ||||
| Series A | Sep 11, 2025 | ||||
| Series A | Apr 2, 2025 |
Key People
Founding team and executive leadership
Adaptive Security Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Andreessen Horowitz | Series B, Series A |
| Bain Capital Ventures | Series B |
| Citi Ventures | Series B |
| OpenAI Startup Fund | Series B, Series A |
| Eniac Ventures | Series B, Series A |
| Gallery Ventures | Series B, Series A |
| NVentures | Series B |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 22, 2026
Grew 26% QoQ, from 175 to 220 employees.
- Apr 21, 2026
Named NVIDIA and OpenAI's only AI cybersecurity investment.
Adaptive Security Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Adaptive Security's valuation, stock price, and market status.
