Audit log.
also: audit logs · audit trail · audit trails · audit loggingAn immutable, chronological record of who did what to which resource, when and from where, kept for security and compliance.
the two-minute refresher
- Actor, action, resource, timestamp, source: every entry answers who / what / which / when / where.
- Unlike application logs (for debugging), audit logs are evidence: complete and tamper-evident.
- Append-only and immutable; integrity proven with hash chains.
- Retention is set by regulation, often years.