Anthropic says Claude found new attacks on HAWK and reduced-round AES
matthew_d_green · x · 2026-07-29
Anthropic says Claude Mythos Preview helped researchers discover new ways to attack cryptographic algorithms.
- The first result weakens HAWK, a post-quantum digital signature scheme.
- The second finds a new attack on round-reduced AES, the most widely used symmetric cipher.
- Anthropic says these are substantial research advances, but do not affect production systems today.
- The post argues that powerful AI models may increasingly help uncover flaws in cryptography itself, not just implementation bugs in code.
Related event: Anthropic's Claude Finds Weaknesses in HAWK and Reduced-Round AES(39 posts)→
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