WSCA-FAU-02 — FAU_STG_EXT — Tamper-evident audit storage

Audit records shall be signed using an HSM-resident audit key to provide tamper evidence. Append-only storage with fail-closed behaviour if audit subsystem is unavailable.

Property	Value
Section	TR 4.3 §1.5

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Source: Nordic EUDIW Common Certification System (NOBCCS) v0.4, June 2026