YC Fall 2025 Security Startups
3 Y Combinator Security companies from the Fall 2025 batch — with team size, status, and one-liner for every startup.
- Total
- 3
- Active
- 3
- Acquired
- 0
- Shut down
- 0
Y Combinator's Fall 2025 batch included 3 Security startups. Of these, 3 remain active, 0 have been acquired, and 0 have shut down.
- Multifactor (6 people) — Zero-trust authentication, authorization, and auditing for AI agents
- Kestrel AI (2 people) — AI Agents for Platform Engineering
- Veria Labs (3 people) — Continuous AI pentesting that finds and fixes vulnerabilities
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