Pass the Passkey: A Novel Attack Surface in Passwordless Authentication
Unit 42 research reveals that relying parties failing to validate WebAuthn's User Verified flag effectively downgrade passkey MFA to single-factor — a systemic risk as enterprises accelerate passwordless rollouts.
Summary written by editorial AI · Source link below
Explore how passkey implementation gaps undermine security when relying parties fail to validate the User Verified flag, reducing MFA to a single factor. The post Pass the Passkey: A Novel Attack Surface in Passwordless Authentication appeared first on Unit 42 .
Editorial Analysis
As European enterprises adopt passkeys under zero-trust strategies, implementation gaps silently eroding MFA guarantees could undermine regulatory expectations around strong authentication.
Audit all WebAuthn/passkey relying-party integrations to ensure the User Verified flag is validated server-side.
Passkey implementations may silently reduce multi-factor authentication to single-factor if vendors fail to validate a critical security flag — audit your rollout.
Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.
External link — opens at Unit 42 (Palo Alto) in a new tab.
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