Rein Security is an Israeli cybersecurity and AI agents company1,2 founded in 20241, headquartered in Tel Aviv1.
It has raised $33M across 2 funding rounds2,1; the most recent was a Series A round of $25M2, announced Oct 8, 20262.
Founders: Matan Bar-Efrat (CEO) and Netanel Rubin (CTO)1.
Funding history
| Round | Announced | Amount | Lead investors |
|---|---|---|---|
| Series A | Oct 8, 2026 | $25M | Glilot Capital, Sienna Venture Capital |
| Seed | Jan 28, 2026 | $8M | Glilot Capital Partners |
| Total raised | $33M |
Founders
Investors
Which Israeli startups are similar to Rein Security?
Sources
- 1CTech, Jan 28, 2026. “8200 alumni raise $8 million Seed round for Rein Security as AppSec faces the AI era”
- 2Calcalist (CTech), Oct 8, 2026. “Rein Security raises $25 million Series A as companies struggle to control their AI agents”
How much funding has Rein Security raised?
Rein Security has raised $33M across 2 funding rounds.
What was Rein Security’s latest funding round?
Rein Security’s most recent round was a Series A round of $25M, announced Oct 8, 2026.
Who founded Rein Security?
Rein Security was founded by Matan Bar-Efrat and Netanel Rubin.
Who has invested in Rein Security?
Investors in Rein Security include Glilot Capital, Sienna Venture Capital, Corner Ventures, Atlacle, RNP Capital Advisors and Glilot Capital Partners.
When was Rein Security founded?
Rein Security was founded in 2024 and is headquartered in Tel Aviv, Israel.