Passkeys (WebAuthn)
Overview
Passkeys are phishing-resistant credentials based on the FIDO2/WebAuthn standard that replace passwords with public-key cryptography.A unique key pair is created per site: the private key stays on the user’s device (often secured by biometrics or PIN), while the public key sits with the service. Authentication proves possession of the private key without revealing it, eliminating password reuse, credential stuffing, and most phishing vectors.Passkeys can sync across trusted device clouds or be stored on hardware keys for portability. In regulated environments, they help satisfy strong customer authentication (e.g., PSD2), align with NIST guidance, and reduce fraud/ATO rates while improving UX. Enterprises typically deploy passkeys alongside device attestation, policy checks, and recovery paths to ensure continuity when devices are lost or replaced.
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