Anthropic says Claude found new attacks on HAWK and a reduced variant of AES
fkasummer · x · 2026-07-29
Anthropic says Claude Mythos Preview helped researchers discover new weaknesses in cryptographic algorithms.
- One result significantly weakens HAWK, a digital signature scheme designed for the post-quantum era.
- A second result identifies a new attack on a reduced variant of AES.
- Anthropic says the HAWK attack cut the best-known key strength roughly in half after 60 hours of work.
- The company stresses that the findings are research advances and do not affect production systems today.
The broader point of the post is that powerful language models may now help experts find cryptographic flaws faster, which raises both security concerns and research interest.
Related event: Anthropic's Claude Finds Weaknesses in HAWK and Reduced-Round AES(39 posts)→
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