Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects successful passkey/WebAuthn authentication or signing events where the User Verification (UV) flag is unset/false or no UV assertion accompanies a device-key signature, scoped to relying parties/credentials where UV is policy-required, or corroborated by a missing biometric/user-presence event or a static (unchanged) signature counter. This reduces noise from relying parties or lower-risk contexts that legitimately do not require UV on every assertion.
Detects successful passkey/WebAuthn authentication or signing events where the User Verification (UV) flag is unset/false or no UV assertion accompanies a device-key signature, scoped to relying parties/credentials where UV is policy-required, or corroborated by a missing biometric/user-presence event or a static (unchanged) signature counter. This reduces noise from relying parties or lower-risk contexts that legitimately do not require UV on every assertion.