Anthropic's security team found that its Mythos Preview AI model can turn security patches for Firefox and the Windows kernel into working exploits within hours, for a few thousand dollars and no specialized knowledge. Eight complete attack chains were finished before Microsoft's auto-updates had reached a single device. The old patch rhythm is obsolete, Anthropic argues.

Advanced models are just as effective at rapidly weaponizing flaws that defenders already know about.

Claude Mythos Preview autonomously built 16 working exploits targeting Firefox and Windows vulnerabilities within hours.

Anthropic's security team found that its Mythos Preview AI model can turn security patches for Firefox and the Windows kernel into working exploits within hours, for a few…