How to conduct a basic security audit

· Category: Cybersecurity

Short answer

A security audit systematically evaluates an organization's defenses against policies, standards, and threats to identify weaknesses and ensure compliance.

Steps

  1. Define scope: Determine which systems, departments, or regulations the audit covers.

  2. Gather documentation: Collect policies, network diagrams, asset inventories, and previous audit reports.

  3. Assess controls: Review access controls, patch status, logging, backups, and physical security.

  4. Run technical scans: Use vulnerability scanners to find missing patches, misconfigurations, and exposed services.

  5. Interview staff: Verify that practices match documented policies and identify shadow IT.

  6. Document findings: Rate risks by likelihood and impact. Provide evidence for each finding.

  7. Create a remediation plan: Assign owners, deadlines, and resources to fix gaps.

  8. Report to leadership: Summarize risks, compliance status, and investment needs.

Tips

  • Use a recognized framework like NIST CSF or ISO 27001 as a benchmark.
  • Maintain auditor independence for objective results.
  • Schedule follow-up audits to verify remediation.

Common issues

  • Scope creep expanding the audit beyond available resources.
  • Resistance from teams fearing blame rather than improving security.
  • Findings without actionable remediation guidance.