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Pass the Passkey: A Novel Attack Surface in Passwordless Authentication

·Source: Unit 42 (Palo Alto)

Updated:

Executive Summary

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 .

Analysis

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 .
Source Attribution

Originally published by Unit 42 (Palo Alto) on Aug 3, 2026.

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