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Passkeys are a trap. Do not use them
(nonfunctional.substack.com)
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this post was submitted on 12 Oct 2026
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Privacy
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This is not plausible, would take billions+ years to stumble upon just one with a botnet that has all online PCs on Earth utilized.
Remote attestation is the real problem with where passkeys are going.
You'd be surprised how poorly most modern web developers (especially LLMs) understand cryptography and the importance of protecting secrets, often storing them in plain text in poorly protected code repos, etc. On a site with a large enough user base and access to that information, it's absolutely possible to reduce the number of tries to hits to a manageable level for a distributed botnet that can't easily be blocked.