Anthropic says Claude Mythos Preview weakened HAWK key strength and improved attacks on reduced-round AES by 200-800x. The results do not break production systems, but they shift AI cryptanalysis from demo to review tool.
A Reddit thread pulled attention to AISI’s latest Mythos Preview evaluation, which shows a step change not just on expert CTFs but on multi-stage cyber ranges. The important claim is not generic danger rhetoric, but that Mythos became the first model to complete a 32-step corporate attack simulation end to end.
A Hacker News thread drew attention to Anthropic's Project Glasswing, a new security coalition built around Claude Mythos 2 Preview. Anthropic says the effort combines major vendors, $100M in usage credits, and direct support for open-source defenders to harden critical software before frontier vulnerability-research capabilities spread more broadly.