Claude Fable Solves a Historical Cipher

· Bruce Schneier · Sept. 9, 2026, 11:36 a.m.
AI Cryptography history of cryptography AI mathematics software development Cipher
Summary
Claude Fable 5.1 successfully solved a 370-year-old cipher in just forty-four minutes, exemplifying the strength of AI in problem-solving tasks that require extensive searching and testing, as discussed by Bruce Schneier.
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