Onyx Security Raises $113 Million to Control AI Agents in the Enterprise

https://www.securityweek.com/wp-content/uploads/2025/12/cybersecurity-funding.jpeg

Onyx Security on Wednesday announced raising $113 million to secure AI adoption in the enterprise.

The Series B funding round was led by Bessemer Venture Partners, with participation from Cyberstarts, TCV, Conviction, FirstMark, Vintage, QuantumLight, and G Squared.

Onyx has raised a total of $153 million since its founding two years ago, and the latest funding will be used to train its proprietary models and scale its go-to-market efforts.

While the Israeli company did not officially disclose its valuation, the new capital injection reportedly values the startup at an estimated $640 million.

Onyx Security offers a centralized platform that helps organizations identify and regulate the use of advanced AI tools across their networks. The solution is designed to address the risks introduced by highly capable AI agents that are granted access to critical corporate systems without built-in accountability or oversight.

According to the company, the technology relies on its...

Copyright of this story solely belongs to securityweek.com. To see the full text click HERE

Read more