Overview
- HiddenLayer announced a $100 million Series B led by Delta-v Capital with participation from Ten Eleven Ventures, Morgan Stanley, M12 and Booz Allen, the company said Wednesday.
- The company said it will use the round to deepen Agentic Runtime Security and launch a new Agent Harness Security product that monitors and blocks manipulation, prompt injection, tool misuse and unauthorized actions by autonomous coding agents at runtime.
- HiddenLayer reported more than 10x ARR growth over the past year and said annual recurring revenue is now in the “tens of millions,” supported by more than 50 new customers across finance, tech, government and defense.
- The startup cites reported selections for high‑assurance government programs and a patent-backed research portfolio as credentials for work in air‑gapped and classified environments, while independent reports place a post‑money valuation near $387 million although that figure is sourced from secondary markets and not independently confirmed.
- Investors expect the funding to accelerate sales, engineering hires and initial expansion into Europe and EMEA, a move that could speed enterprise adoption of runtime AI security and increase acquisition interest from larger cybersecurity and cloud vendors.