Act Security, founded in 2025 and based in Tel-Aviv, Israel, has officially launched from stealth mode. The company announced total funding of $60 million, secured through a $20 million Seed round and a $40 million Series A round. The Seed round was led by Team8 and Bessemer Venture Partners, with participation from Hetz Ventures and Claltech. Notable Capital led the Series A round, with participation from Startpoint Capital and SVCI.
Act Security aims to combat the increasing challenge of vulnerability exploitation in cloud environments, particularly those exacerbated by AI-driven vulnerability discovery. The company highlights that organizations have accumulated extensive access sprawl in their cloud infrastructures, with most granted permissions being unnecessary and unused. These excessive access paths are identified as a primary target for external attackers and untethered AI agents to exploit vulnerabilities.
The security industry faces a growing number of Common Vulnerabilities and Exposures (CVEs), partly due to the speed at which frontier AI models can identify new weaknesses. The Forum of Incident Response and Security Teams (FIRST) projects approximately 59,000 new CVEs in 2026, averaging 161 new vulnerabilities daily. Software vendors are struggling to keep pace with patching these, as evidenced by Oracle's 1,400 patched vulnerabilities in July 2026 and Microsoft's 622 patches, and Google's 429 patches for Chrome 149.
Instead of patching vulnerabilities, Act Security focuses on reducing or eliminating the access surface in cloud infrastructures that makes unpatched vulnerabilities exploitable. The company's strategy involves enforcing deterministic boundaries to limit the reach of humans, workloads, and AI agents. Act Security states that close to 97% of cloud access remains dormant and unused, and AI agents are inheriting these same permissions, operating continuously at machine speed without human judgment.
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Act Security has emerged from stealth with $60 million in funding to tackle the problem of unpatched cloud vulnerabilities being exploited. The company focuses on reducing access sprawl in cloud environments to prevent the exploitation of vulnerabilities, rather than patching them directly.