Anthropic's Claude Mythos Reduces HAWK-512 Security to 108 Bits
August 5, 2026
Anthropic's Claude Mythos model successfully executed a key-recovery attack on the HAWK post-quantum signature scheme, reducing its security from 128 bits to between 81 and 108 bits. The model also identified a 7-round attack on AES-128, though it failed to find vulnerabilities in full-round AES.
HOW THIS AFFECTS YOU
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researcherYou can use LLM-assisted cryptanalysis to find non-obvious weaknesses in post-quantum candidates.
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policyThis signals that LLMs may accelerate the discovery of vulnerabilities in emerging cryptographic standards.