Policy3 min read
Anthropic's Claude Mythos Found Thousands of Zero-Days — So They're Not Releasing It
Anthropic has quietly restricted its most capable new model, Claude Mythos, after the system autonomously discovered thousands of critical vulnerabilities in major operating systems and browsers — including a 27-year-old OpenBSD bug and a 16-year-old FFmpeg flaw. The model is being deployed exclusively through Project Glasswing with 11 vetted security partners. It is the most concrete case yet of an AI lab withholding a model because of genuinely demonstrated risk.