6.5. Audits and Assessments

💡 First Principle: Think of audits as a health checkup for your security program — they diagnose problems before they become crises. Audits and assessments provide independent verification that security controls exist, function properly, and achieve their objectives. Self-assessment is valuable but insufficient — independent validation catches blind spots that internal teams miss, and external audit reports provide the evidence that regulators, customers, and partners require.

What happens without regular audits? Compliance drift — controls that were properly configured gradually degrade. Logs that were reviewed daily are now reviewed weekly, then monthly, then not at all. Patches that were applied promptly now wait in a growing backlog. Without audits to measure and enforce standards, entropy wins and the security program deteriorates.

⚠️ Exam Trap: Internal and external audits serve different purposes — internal audits support ongoing self-improvement and early detection, while external audits provide independent validation that outsiders will actually trust.