Rein Security
Runtime security for enterprise AI agents
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About
Rein Security builds an agentic AI security platform that discovers and secures enterprise AI apps and agents at runtime. Deployed as a lightweight sidecar, it baselines each agent’s behavior and applies contextual, action-level controls so harmful steps can be blocked without shutting the whole agent down. Co-founded by Matan Bar-Efrat and Netanel Rubin, the company announced a $25 million Series A in October 2026 from Glilot Capital, Sienna Venture Capital, Corner Ventures, Atlacle and RNP Capital Advisors, bringing total funding to $35 million.
- Website
- reinsec.io
- Added via
- web
- Ownership
- unclaimed
Where to go
Products
- Rein Platform — Enterprise AI security layer with real-time visibility and runtime guardrails · Saas