Cyera Secures $400M Series F to Lead in Agentic AI Security

Blackstone-Led Funding Round Expands R&D and Partnerships to Address AI Threats Michael Novinson (MichaelNovinson) • January 8, 2026

A data security startup founded by a longtime Israeli Military Intelligence leader raised $400 million to address security challenges related to the growth of agentic AI.

The Blackstone-led Series F funding round will help New York-based Cyera evolve from its roots in data discovery and protection into the control plane for managing how AI interacts with sensitive data, said Chief Strategy Officer Jason Clark. Legacy security models built around user authentication and static permissions are fundamentally incompatible with autonomous, intent-driven agents, he said.

"This is really probably the biggest security hole and problem opportunity from a business standpoint, AI and agentic," Clark told Information Security Media Group. "When you’ve got someone like a Blackstone who has a great brand, brings value and is not ...