Unauthorized group has gained access to Anthropic’s exclusive cyber tool Mythos, report claims

An unauthorized group has reportedly gained access to Mythos, Anthropic's exclusive AI-powered cybersecurity tool, through a third-party vendor environment. The group, connected via a Discord channel focused on unreleased AI models, guessed the model's online location based on Anthropic's known URL patterns and has been using it regularly since the day of its public announcement. Anthropic is investigating but says there is no evidence its own systems were impacted. Mythos was released exclusively to select vendors including Apple under Project Glasswing, specifically to prevent misuse by bad actors.