Write-Once Read-Many (WORM) Storage
Immutable storage ensuring logs, audit trails, and model artifacts cannot be altered once written, supporting non-repudiation and forensic review.
Definition
A storage mechanism (e.g., specialized object-storage tiers, append-only ledgers) where once data is written it becomes unchangeable. AI governance uses WORM to retain provenance records, compliance logs, and certified model versions, guaranteeing that historical artifacts remain tamper-proof. Policies specify retention periods, access controls, and verification routines to confirm immutability.
Real-World Example
A bank’s ML platform writes all model audit logs and dataset snapshots to a WORM bucket in its cloud provider. Regulators periodically verify the bucket’s immutability settings, ensuring no retrospective alterations have occurred and maintaining trust in audit records.
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