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@discontinuity@infosec.exchange

Post #1485768

2026-04-09 10:12 UTC

I think it would be really fun to do a talk that's not just "intro to passkeys" but more "how can you mess up passkey implementation". I know you can set up SSO so you don't link the SSO accounts immutably to an account. You 100% could do the same thing with passkeys, and I think proposing a talk would be good incentive to learn more about how passkeys work in detail (like how badly could you mess up a passkey request? Or is it really just that robust because the browser controls it? What if you roll your own in a custom app? Maybe the only issues are after the passkey exchange, but that still gives you a rich tapestry of fuck ups to choose from!) Would you be interested in such a talk? What questions do you have about passkeys?

Replies (1)

  • @hacksilon@infosec.exchange 2026-04-09 12:10

    @discontinuity ohh, I would love to hear that talk. Also reminds me of this post, which would be a great thing to include there as well: https://blog.timcappalli.me/p/passkeys-prf-warning/

    Open ##2124381