HiddenLayer raises $100M for AI security

HiddenLayer announced a $100 million Series B led by Delta-v Capital to expand security for agentic, generative, and predictive AI applications, according to its funding announcement. The round arrives as coding agents turn tool access and model inputs into a security surface; company materials describe protection against prompt injection, tool misuse, secret exposure, and unsafe commands, but provide no independent deployment benchmark. Builders deciding whether to add an AI-specific security layer should file the funding as a market signal, not proof of efficacy, and compare it with the controls in OpenAI’s agent-security firewall analysis.