Onyx Security

Control plane for securing, governing, and auditing enterprise AI agent activity.

Onyx Security gives enterprises one place to control AI agents: what they may access, how they are permitted to behave, and a record of what they did. It addresses the gap between fast agent adoption and security tooling built for human users. Founded in 2024.

Category: Agent Security & Governance
Founded: 2024
Funding: $153M raised (Series B, 2026)
Website: https://onyx.security

Seen at Black Hat USA 2026 (Platinum sponsor, booth 4939).

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