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AhaBulb: Stuff Everyone Should Know · ahabulb.com/tech-webauthn-rp-scope

Why can a WebAuthn passkey resist a lookalike site's login prompt?

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  1. It recognizes the site's logo
  2. It checks the user's typing
  3. It works only for its RP ID

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References

  1. W3C Web Authentication Level 3 www.w3.org/TR/webauthn-3 Checked 2026-10-10.

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