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Startups & Venture·July 30, 2026·1 min read

Onyx Security, whose platform enables enterprises to deploy AI agents securely, raised a $113M Series B led by Bessemer, taking its total funding to $153M

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Nine-figure funding for an AI agent security specialist four months out of stealth says boards now see agent risk as its own category, not a feature of existing AppSec. If you're piloting agents against production systems, you need an explicit control plane and audit story before scale, not after.