Frontier AI Can't Hack Corporate Networks? Claude Mythos Just Did It in 20 Hours.

Claude Mythos, an AI model, successfully completed a 32-step corporate network attack in 20 hours, busting the myth that frontier AI cannot execute multi-stage cyberattacks. An independent evaluation by the UK AI Security Institute (AISI) confirmed Mythos solved their hardest cyber range and succeeded in 73% of expert-level challenges.