Rein Security Raises $25 Million to Guard AI Agents at Runtime
Cybersecurity startup Rein Security today announced raising $25 million in a Series A funding round that brings the total raised by the company to $35 million.
The fresh investment round was co-led by Glilot Capital and Sienna Venture Capital, with additional support from Corner Ventures, Atlacle and RNP Capital Advisors.
Headquartered in Tel Aviv and New York City, Rein was founded in 2024 to protect applications at runtime and provide real-time context inside production environments, and has since extended its technology to AI agents.
Rein’s AI-native security platform operates where agents execute actions, providing visibility into their behavior, real-time guardrails, and governance, while also offering supply chain security for AI agents.
With AI adoption outpacing security, Rein’s patented, real-time architecture promises protections that can keep up. According to the company, its solution already secures thousands of agents across multiple industries.
The startup will use the fresh funding to accelerate product...
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