Log Management

Log management is the process of collecting, storing, analyzing, and retaining log data from systems and applications for security monitoring and compliance.

Log management is essential for security monitoring, incident investigation, and compliance requirements.

What to log: - Authentication events (login, logout, failures) - Authorization decisions - Data access and modifications - Administrative actions - Security events and alerts - System errors and changes

Log management lifecycle: 1. Collection: Aggregate logs from all sources 2. Normalization: Standardize formats 3. Storage: Secure, tamper-evident retention 4. Analysis: Search, correlate, alert 5. Retention: Keep for required period 6. Disposal: Secure deletion after retention

Best practices: - Centralized logging (SIEM) - UTC timestamps - Sufficient context in logs - Log integrity protection - Defined retention periods

Why It Matters

Without centralized log management, incident investigation is nearly impossible—you cannot determine what happened, when, or who was involved. Compliance frameworks require that logs be collected, protected from tampering, and retained for defined periods. Organizations that invest in proper log management reduce mean time to detect incidents from months to hours, dramatically limiting breach impact.

Key Points

Central to security monitoring and compliance

Retention typically 1 year minimum

Logs must be tamper-evident

Include who, what, when, where, result

Regular review and alerting essential

Applicable Compliance Frameworks

SOC 2 ISO 27001 HIPAA PCI DSS

Related Terms

SIEM

SIEM (Security Information and Event Management) is a platform that aggregates logs from multiple sources, correlates security events, and provides real-time alerting and analysis.

Audit Trail

An audit trail (or audit log) is a chronological record of system activities that provides documentary evidence of the sequence of events that have affected an operation or procedure.

Continuous Monitoring

Continuous monitoring is the ongoing, automated observation of security controls, systems, and networks to detect issues, ensure compliance, and respond to threats in real-time.