News for hackers. Stuff that matters.
Re:YubiKey 5 Series with New NFC and FIDO2 Passwordless Feat... by tialaramex on Monday September 24, 2018 @12:10PM (#18058881)
You seem confused. I think you're describing TOTP, but this whole thread is about FIDO.

WebAuthn, U2F and similar FIDO based schemes are sending some public key signed blobs over the network. A PIN is purely a local protection, it's not sent over the wire. So a hacker can't just try guessing the PIN. First they need to steal your physical token, only then could they start guessing PINs for the stolen token.

Re:YubiKey 5 Series with New NFC and FIDO2 Passwordless Feat... by emlun on Tuesday September 25, 2018 @06:11AM (#18064940)
And even then, the token would lock itself down after too many incorrect PIN attemtpts.