Anthropic says Claude found new weaknesses in HAWK and round-reduced AES
AnthropicAI · x · 2026-07-29
Anthropic says Claude Mythos Preview helped researchers uncover new mathematical weaknesses in cryptographic algorithms.
- One attack significantly weakens HAWK, a digital signature scheme designed for a post-quantum world.
- Another identifies a new way to attack round-reduced AES, the most widely used symmetric cipher.
- Anthropic says these are substantial research advances, but they do not affect any production systems today.
- The company frames the work as evidence that powerful AI models may become useful for cryptanalysis, not just software vulnerability discovery.
Related event: Anthropic's Claude Finds Weaknesses in HAWK and Reduced-Round AES(39 posts)→
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