Rein Security
Rein Security is a cybersecurity company specializing in AI Security, founded in 2024 and headquartered in Tel Aviv, Israel. It has raised $33M in equity across 2 priced rounds, employs about 32 people, and is privately held.
#7AI Security Pacesetter· Q3 2026updated Oct 24, 2026
Latest Rein Security news and company activity
What Rein Security did, dated — selected moves from the record, one per kind, newest first.
- Oct 2026RecognitionRein Security Named Enterprise Group Winner at TechCrunch Disrupt 2026 Startup Battlefield
- Oct 2026Funding roundRein Security raises $25M Series A to secure enterprise AI agents
- Jun 2026Product launchRein Launches Enterprise Agent Security Platform for Dun & Bradstreet
- Apr 2026Exec changeJeremy Major joins Rein Security as VP Sales
Rein Security Momentum score
78/ 100climbing
Mandos Momentum blends hiring, funding, traffic and sentiment into one score out of 100. The score is free; the pillars behind it unlock in the platform.
Rein Security funding
Rein Security has raised $33M in priced equity. Its most recent round was a Series A in October 2026. It has 2 funding rounds on record: Seed and Series A. 10 investors are on record, including Glilot Capital and Sienna Venture Capital.
- Equity raised
- $33M2 priced rounds
- Last round
- Series AOct 2026
Rein Security employees and hiring
As of September 2026, Rein Security has about 32 employees, up 10% over the last 30 days, with 2 open roles.
- Employees
- 32
- 30-day change
- +10%
- Open roles
- 2
Rein Security competitors
Competitors of Rein Security include Primary, Arrakis Security, and ClawSecure. 135 more are in the platform, with overlap scoring.
matched by product category and features
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Rein Security CISO Score
How Rein Security reads to a CISO buyer: seven dimensions of the Mandos Framework, scored through the eyes of a security buyer.
