In late March, rumors of a new Anthropic Claude AI model called Mythos triggered a sudden sell-off in cybersecurity stocks. Panic mounted weeks later when the company confirmed that the software was too dangerous for standard public release. Anthropic warned that Mythos could independently map out an organization’s entire digital infrastructure and exploit invisible security flaws. Even worse, the model could mount cyber attacks itself, sending shock waves across the global insurance sector.
Executive Summary
As autonomous AI shrinks the time between software vulnerability discovery and exploitation by threat actors, cyber underwriting is transitioning to active surveillance and security partnerships to battle code with code.To contain this dire threat, Anthropic subsequently halted the public launch of Mythos and confined the unsecured system to a private, closed-door alliance of a dozen defense agencies and elite tech firms. Known as Project Glasswing, the coalition was tasked with patching the model’s vulnerabilities to prevent a catastrophic breach. On June 9, the emergency work concluded, and Anthropic released a heavily secured version of the AI model to the commercial market under the name Claude Fable 5.







