Audit Logging

Overview

Audit logging is the operational practice that creates and manages audit records across applications, infrastructure, identities, and business workflows. It defines which events are captured, their fields and severity, where records are sent, and how long they remain available.

Poor logging may omit critical actions, generate excessive noise, expose secrets, or lose events during failures. Effective designs use consistent identifiers, centralized collection, clock synchronization, access controls, integrity protection, capacity planning, and alerts when sources stop reporting.

Teams should test whether logs answer likely investigation questions and correlate activity across services. Review procedures, privacy limits, retention, legal holds, and deletion must be documented so logging supports security without becoming an unmanaged store of sensitive data.

Audit logging is the controlled process of generating, transmitting, protecting, retaining, reviewing, and disposing of records about significant system activity. Reliable results for Audit Logging depend on representative evidence, reproducible sampling, qualified judgment, traceable findings, named owners, deadlines, and verification that corrective actions work. Audit logging is a complete lifecycle, not merely writing events, and must preserve useful evidence without collecting unsafe or excessive information.

Implementation of Audit Logging should map the controlled process of generating, transmitting, protecting, retaining, reviewing, and disposing of records about significant system activity to the applicable entity, product, customer, transaction, and jurisdictional scope. Evidence for controlled process of generating, transmitting, and protecting should preserve the governing requirement, policy version, control execution, exception decision, owner, and review date. Material changes affecting the Audit Logging context and controlled process of generating, transmitting, and protecting should trigger reassessment instead of silent reuse of an outdated conclusion.