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Why this module exists. ISO 27001 internal audit — the practitioner audit that establishes readiness for external certification — is what separates passing from failing the certification cycle. This module covers the internal audit programme structure, the evidence types auditors expect, and the common findings that ISO 27001 certifications hinge on.
Why this module exists. ISO 27001:2022 has 93 Annex A controls grouped into four themes. The internal audit verifies these are implemented and effective. Done well, certification follows mechanically; done poorly, certification fails or extends. This module covers what works.
The internal audit programme structure
ISO 27001 requires internal audit at planned intervals. Practitioner cadence:
- Annual full audit — every control checked, sample-based evidence verification.
- Quarterly thematic deep-dives — pick one theme (Organisational, People, Physical, Technological) and audit in depth.
- Continuous control monitoring — automated checks where possible (M5 in this track).
- Triggered audits — after significant incidents, organisational changes, or new system launches.
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