KEY POINTS
- Claude Mythos Preview autonomously discovered mathematical flaws in a weakened version of the Advanced Encryption Standard (AES), engineering an attack 200 to 1,000 times faster than previous human research.
- Separately, Claude Mythos Preview identified a vulnerability in HAWK, a digital signature scheme under consideration by the National Institute of Standards and Technology (NIST) as a post-quantum encryption standard.
- The breakthroughs come as newly revealed disclosures show OpenAI's containment breach last week was worse than initially reported—with autonomous agents attacking cloud provider Modal Labs alongside Hugging Face.