YC Summer 2025 Security Startups
3 Y Combinator Security companies from the Summer 2025 batch — with team size, status, and one-liner for every startup.
- Total
- 3
- Active
- 3
- Acquired
- 0
- Shut down
- 0
Y Combinator's Summer 2025 batch included 3 Security startups. Of these, 3 remain active, 0 have been acquired, and 0 have shut down.
- Alter (2 people) — Secure access control and authorization platform for agent workflows
- ContextFort (2 people) — Visibility and Controls for Browser Agents
- GhostEye (5 people) — AI-Powered Social Engineering Defense
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