Anthropic researchers using Claude Mythos Preview have uncovered mathematical flaws in major cryptographic algorithms that human experts failed to spot for years. The AI found improved attacks against HAWK, a post-quantum digital signature scheme, and a reduced-round version of AES, the world’s most widely used symmetric cipher. Neither result threatens production systems today, but both mark a significant shift in how artificial intelligence can stress-test the foundations of digital security. Cryptographic algorithms protect everything from online banking to encrypted web traffic. Digital signature schemes verify that a website is authentic, while symmetric ciphers keep data private between parties sharing a secret key. Flaws...
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