HiddenLayer raises $100M and adds runtime security for AI coding agents

Summary

HiddenLayer said Delta-v Capital led its $100M Series B, with participation from Ten Eleven, Morgan Stanley, Microsoft’s M12 and Booz Allen Ventures. The financing will expand agentic runtime security and Agent Harness Security, which monitors and protects autonomous coding agents at runtime.

Why it matters

The raise is a market signal that agent security is shifting from model testing towards controls around the harness, tools and actions that make models operational. The company’s customer and revenue claims are self-reported, but the product direction matches the industry’s widening attack surface.

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Sources

• HiddenLayer Raises $100M Series B to Advance Trustworthy AI