Onyx Security is developing an agent-native security and governance platform that continuously discovers enterprise AI agents, inspects every step of their reasoning, and intervenes when necessary to block, require human approval, or redirect agent actions. The unified control plane gives security teams visibility, posture management, and runtime protection, while helping governance teams satisfy regulatory requirements and enabling infrastructure teams to optimize cost, accuracy, and latency. Executives can also track AI adoption and performance metrics through the same dashboard. The system is powered by proprietary supervisory agents and in-house AI models purpose-built to understand and manage other agents in real time. Co-founded by cybersecurity veteran Maxim Bar Kogan and former Nvidia AI researcher Gil Elbaz, the company already serves multiple Fortune 500 customers and employs more than 70 people across Israel, the United States, and Canada. Headquartered in New York and Tel Aviv, Onyx plans to use its new capital to expand product and engineering teams, build additional AI models, and scale go-to-market efforts. The business has raised $40 million to date but has not publicly disclosed revenue or user numbers.

Total raised

$153M

Funding rounds

3

Latest round

Series B

Latest activity

Jul 2026