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1 AUG 2026 · Simon Willison

Ten advances in mathematics and theoretical computer science A few days ago it was Anthropic discovering cryptographic weaknesses with Claude using Mythos Preview, spending $100,000 on tokens and with prompts that included "again we are not…

1 AUG 2026 · OpenAI

OpenAI shares new results on long-standing open problems in mathematics and theoretical computer science, including advances in geometry, cryptography, and complexity.

28 JUL 2026 · Hacker News · 229 pts · 182 comments ↗

Researchers at Anthropic have used their Claude AI model to discover improved ways to attack cryptographic algorithms, including a significantly weakened digital signature scheme called HAWK and an improved attack on reduced-round AES, the most widely used symmetric cipher. These attacks do not currently affect any production systems but demonstrate the potential for frontier AI models to help discover flaws in important cryptographic algorithms. AI summary