YC Winter 2026 Security Startups
6 Y Combinator Security companies from the Winter 2026 batch — with team size, status, and one-liner for every startup.
- Total
- 6
- Active
- 6
- Acquired
- 0
- Shut down
- 0
Y Combinator's Winter 2026 batch included 6 Security startups. Of these, 6 remain active, 0 have been acquired, and 0 have shut down.
- Crosslayer Labs (3 people) — Protect, monitor and defend your Internet presence
- Protent (2 people) — Real time intelligence for law enforcement & security teams.
- Agentic Fabriq (2 people) — The control plane for AI agents.
- Lexius (3 people) — AI for Corporate Security Cameras
- BeeSafe AI (3 people) — Frontier AI Defenses for Social Engineering Attacks
- Hex Security (7 people) — Agentic Offensive Security at Scale
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