Cryptographer says Anthropic dismissed encryption flaw he reported in May, now exploited for months
Miles_Brundage · x · 2026-09-12
- Cryptographer Matthew Green says he reported encryption-related replay-attack issues to Anthropic in May, only to be told replay attacks weren't in their threat model.
- The attacks have apparently since been exploited by users for months, and Green is "kind of annoyed."
- The post also cites Anthropic confirming its models were distilled in a described manner. Amplified by Miles Brundage.
Related event: Cryptographer Slams Anthropic for Ignoring Reported Flaw(2 posts)→
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