Onyx Security raises $113M to control AI agents in enterprise, signaling where smart money is flowing

Via jpost.com Onyx Security raises $113M to control AI agents in enterprise, signaling where smart money is flowing The Tel Aviv and New York startup's $640M valuation after just two years reveals a massive bet on AI governance that crypto builders should be watching closely. Share Add us on Google by Editorial Team Jul.

30, 2026 Onyx Security, a two-year-old startup with offices in Tel Aviv and New York, closed a $113 million Series B round on July 29. The round was led by Bessemer Venture Partners with participation from Cyberstarts, TCV, and others. The company’s valuation now sits at roughly $640 million.

Advertisement Onyx built what it calls an “AI control plane,” essentially a supervisory layer that discovers, monitors, and remediates risks created by AI agents operating across an organization. The centerpiece is something called the “Guardian Agent,” a supervisory component that watches other agents in real time and intervenes when they start doing things they shouldn’t. The platform currently secures more than 1.

1 million agents and covers 1.8 million employees. It has analyzed 66.

2 million sessions to date. Onyx only emerged from stealth mode in March 2026. In the four months since launch, the company’s revenue quadrupled.

The company previously raised $40 million in March 2026, split between a $35 million Series A led by Conviction and a $5 million seed round from Cyberstarts. Total funding now exceeds $153 million. Onyx itself has no crypto or blockchain component.

Co-founder Maxim Bar Kogan, the CEO, brings a background from IDF Unit 8200, Israel’s elite intelligence technology unit. Co-founder Gil Elbaz serves as Chief AI Officer. Disclosure: This article was edited by Editorial Team.

For more information on how we create and review content, see our Editorial Policy. TECHNOLOGY Onyx Security raises $113M to control AI agents in enterprise, signaling where smart money is flowing The Tel Aviv and New York startup's $640M valuation after just two years reveals a massive bet on AI governance that crypto builders should be watching closely. by Editorial Team Jul.

30, 2026 Share Add us on Google Via jpost.com Onyx Security, a two-year-old startup with offices in Tel Aviv and New York, closed a $113 million Series B round on July 29. The round was led by Bessemer Venture Partners with participation from Cyberstarts, TCV, and others.

The company’s valuation now sits at roughly $640 million. Advertisement Onyx built what it calls an “AI control plane,” essentially a supervisory layer that discovers, monitors, and remediates risks created by AI agents operating across an organization. The centerpiece is something called the “Guardian Agent,” a supervisory component that watches other agents in real time and intervenes when they start doing things they shouldn’t.

The platform currently secures more than 1.1 million agents and covers 1.8 million employees.

It has analyzed 66.2 million sessions to date. Onyx only emerged from stealth mode in March 2026.

In the four months since launch, the company’s revenue quadrupled. The company previously raised $40 million in March 2026, split between a $35 million Series A led by Conviction and a $5 million seed round from Cyberstarts. Total funding now exceeds $153 million.

Onyx itself has no crypto or blockchain component. Co-founder Maxim Bar Kogan, the CEO, brings a background from IDF Unit 8200, Israel’s elite intelligence technology unit. Co-founder Gil Elbaz serves as Chief AI Officer.

Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.