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AI Funding · October 11, 2026 · 1 min read

Rein Security Raises $25 Million to Secure AI Agents at Runtime

The Series A brings total funding to $35 million; customers include Flex, Swimlane, Lemonade and Dun & Bradstreet.

Rein Security Raises $25 Million to Secure AI Agents at Runtime

Rein Security raised a $25 million Series A, bringing its total funding to $35 million, SiliconANGLE reported on October 8. The company secures AI agents at runtime, and its platform has already been deployed by enterprises including Flex Ltd., Swimlane Inc., Lemonade Inc. and Dun & Bradstreet Holdings Inc.

Securing agents while they run, rather than only reviewing the code that creates them, addresses a problem Fortune highlighted in September: CIOs racing to put guardrails around agents that act outside their intended limits.

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Source: SiliconANGLE

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