GDPR Audit Log Retention Template + Policy Examples

GDPR does not name audit logs specifically. The relevant articles are 5(1)(e) (storage limitation, "no longer than is necessary"), 5(2) and 24 (accountability), and 30 (Record of Processing Activities). Together they require that audit logs containing personal data have a defined and documented retention period tied to a stated purpose. Article 32 also requires logs as part of demonstrating security of processing. The practical answer is "keep them only as long as you have a documented purpose, then delete or anonymize."

For high-volume operational logs (debug, request traces) yes, as long as you do not also rely on those logs for security investigation. For authentication and access logs, 90 days is the more common baseline because security incidents often surface weeks after the fact. For financial or DSAR-related logs, 6 years is the typical floor because tax law and legal evidence requirements override.

Audit logs that exist for legal obligation or legitimate interest in security and fraud prevention can be retained even after a deletion request, because Article 17 carves out those purposes. Document this in your erasure policy. For audit logs that are not strictly necessary, either anonymize the user identifier (replace with a hash) or delete the affected entries. Most companies anonymize so the audit trail stays intact for non-personal investigation.

No. "Cold storage" is still storage under GDPR. The retention period applies regardless of storage tier. The legitimate use of cold storage is for logs that have a long but finite retention obligation (e.g., 6 years of billing records), where the access pattern is rare. Indefinite retention requires a stated lawful basis and purpose, which is hard to defend for most audit logs.

Yes, ideally. Access to raw audit logs is itself a sensitive operation. Log who queried the audit log, what filters they used, and when. This supports both internal accountability and external compliance evidence. Many SIEMs do this automatically. For homegrown audit log stores, build it in. ---