Anthropic Expanding Mythos Access to 150 New Organizations

Only approximately 50 companies have had access to Mythos until now and they have found thousands of vulnerabilities in their products. The post Anthropic Expanding Mythos Access to 150 New Organizations appeared first on SecurityWeek .

According to the report, Anthropic is expanding access to its Claude Mythos Preview model under Project Glasswing from roughly 50 to about 200 total organizations, adding around 150 new participants that meet Anthropic’s security standards.[1][2] Mythos has already identified over 23,000 potential vulnerabilities and thousands of severe issues across products and open source projects, demonstrating its power as a defensive cybersecurity tool.[1][3] CyberSE.AI analysis: Broadening access to a powerful, unreleased frontier model through a partner program introduces AI supply chain risk, because organizations are now dependent on Anthropic’s security controls, access governance, and third-party integration hygiene for a critical security capability. Security teams should treat Mythos as a high-value, dual-use component in their AI supply chain, requiring SBOM-level visibility, strict access control, continuous red teaming of how it is integrated into their environments, and readiness assessments to ensure policies and monitoring align with the model’s elevated attack and misuse potential.