Every round on record, with the sources behind each and the investors on them.
The AI-native runtime security platform for enterprises
reinsec.ioNYC and Tel Aviv, IsraelCybersecurityFounded 2024
8 sources
The source states total funding of $35 million, but does not state a larger running total for this Series A. It mentions offices in Tel Aviv and New York, not headquarters.
| Round | Amount | Announced | Lead | Buzz |
|---|---|---|---|---|
| Series A | $25M $35M to date | 2026-10-01 | Glilot Capital Partners, Sienna Venture Capital | 5 outlets. #23 in Trending |
8 sources [ VERIFIED · CORRECTED ] read against 1 of 8 sources
The source states total funding of $35 million, but does not state a larger running total for this Series A. It mentions offices in Tel Aviv and New York, not headquarters. | ||||
Rein Security builds an AI-native runtime security platform that gives enterprises visibility and control over every action their AI agents take in production, blocking harmful behavior without routing data through a gateway or proxy.
As enterprise agents reach customer data, money, payments, and regulated workflows, Rein says traditional code scans, posture dashboards, and gateway logs can miss hidden prompt injections and harmful runtime behavior. Its $25 million Series A backs the bet that an in-process sidecar can trace every agent action, block deviations before execution, and keep data inside the organization, following 8x revenue growth and 5x customer growth since its January 2026 launch.
Checked against 13 sources today