Act Security Emerges from Stealth to Fight the Patch Problem

Keeping pace with new CVEs resulting from AI vulnerability discovery is a constant and losing battle.

Founded in 2025, Tel-Aviv Israel based Act Security has emerged from stealth with total funding of $60 million. The funding comprises a $20 million Seed round led by Team8 and Bessemer Venture Partners (with participation from Hetz Ventures and Claltech); and a $40 million Series A round led by Notable Capital (with participation from Startpoint Capital and SVCI).

Act Security tackles the spiraling patch problem caused by AI’s ability to find new vulnerabilities in existing cloud environments. It warns that organizations have accumulated massive access sprawl across their cloud environments, with the vast majority of granted cloud permissions unneeded and unused. These access paths are used by external attackers to exploit vulnerabilities, and untethered AI agents to perform unintended actions.

The speed and scale at which frontier AI models find and allow bad...

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