Anthropic is broadening access to the cybersecurity capabilities of its advanced AI models through a mix of partner integrations, an updated Claude Security offering, a new open source funding program, and plans to expand its Cyber Verification Program.
The move builds on Project Glasswing, launched in April, which gave a small group of organizations early access to Claude Mythos Preview and its successor, Mythos 5. Anthropic said the goal was to give defenders time to find and fix vulnerabilities before comparable capabilities became widely available or fell into the hands of malicious actors. Claude Fable 5 followed as a broadly available model that keeps dual-use cyber work blocked.
Anthropic said the riskiest scenario is direct, unrestricted access to a model, a risk that drops sharply when users instead receive specific defensive outputs, such as a patch or a security alert. The latest changes are built around this idea, expanding what defenders can get from Mythos-class models while keeping guardrails around direct interaction with them.
On the integration front, Anthropic is working with cybersecurity partners to build Mythos 5 into the security operations, incident response and detection tools already used by teams protecting hospitals, utilities, financial systems, and the software supply chain.
