Matthew Green's Counterintuitive Take: The Post-Quantum Migration Makes This the Best Possible Moment for AI Cryptanalysis to Arrive

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Reacting on July 29 to Anthropic's Mythos results, Johns Hopkins cryptographer Matthew Green argues the timing is a gift rather than a threat: the field is mid-migration from RSA and elliptic-curve to post-quantum algorithms, so either AI fails to dent the new hard problems — validating them — or it finds the flaws now, while candidates are still candidates. His sharper warning is operational: verification, not discovery, is the bottleneck, and 'just because a model spits out an apparent new result' does not make it correct. For builders shipping AI into any review-and-verify workflow, that asymmetry — cheap generation, expensive expert validation — is the transferable lesson, and the post drew 169 points on Hacker News.