HiddenLayer is an Austin, Texas-based AI security company that protects agentic, generative and predictive AI applications across the full AI lifecycle, from discovery and supply-chain security to attack simulation and runtime protection. Its AISec Platform scans AI models and file formats for tampering and defends AI agents against threats like prompt injection, manipulation and malicious tool use at runtime. A Gartner-recognized Cool Vendor for AI Security, it counts financial services, large technology firms and US defense and intelligence customers, and secures AI for a leading frontier model provider with over 700 million weekly users.
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Sep 2, 2026
Latest raise
Funding activity · 1 round
Sep 2, 2026
$100M
Series B
Led by Delta-v Capital
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