Anthropic says its 'codebreaking' AI capabilities are growing... Mythos discovers a weakness in the PQC algorithm HAWK

Anthropic’s AI model Mythos found a fundamental weakness in HAWK, a post-quantum digital signature candidate, according to Ars Technica.

After verifying the flaw, the developers withdrew HAWK from NIST’s standardization process.

Mythos did not invent new math; it combined existing cryptographic techniques in an unexpected way to cut effective key strength in half.

The case suggests large language models could play a growing role in cryptography research and standards review.