Running an ISO 27001 Internal Audit

An internal audit is a key part of ISO 27001’s continual improvement cycle.
It helps ensure that your ISMS is effective, compliant, and evolving alongside your business and risk landscape.

Start by developing an internal audit plan.
Define scope, objectives, frequency, and audit criteria.

Select qualified auditors—either internal staff with no conflict of interest or external experts.
Conduct the audit systematically, reviewing both documentation and control operations.

Document all findings.
Non-conformities should be logged and tracked through corrective actions.

Consistent, transparent internal audits foster a culture of accountability and continuous improvement, core principles of ISO 27001.