YC Summer 2021 Security Startups

9 Y Combinator Security companies from the Summer 2021 batch — with team size, status, and one-liner for every startup.

Total
9
Active
5
Acquired
3
Shut down
1

Y Combinator's Summer 2021 batch included 9 Security startups. Of these, 5 remain active, 3 have been acquired, and 1 have shut down.

  • Protego (5 people) — We help companies recover lost revenue from chargebacks
  • Malloc Inc (10 people) — AI-driven mobile cybersecurity
  • Hyperbrowser (4 people) — Web infra for AI agents
  • Keyri (5 people) — Secure fraud prevention and authentication platform for developers
  • Tarsal (10 people) — Data pipeline for your security data lake.
  • Cloudanix (8 people) — Cloud and Container Security Platform
  • Telivy (6 people) — Automate your cyber security risk assessments
  • ContraForce (15 people) — Security Delivery Platform to orchestrate AI agents for Service…
  • idemeum (10 people) — AI-powered Application Control

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