ISO 27001 practical guide
ISO 27001 Corrective Action
ISO 27001 corrective action addresses the cause of a nonconformity so it does not recur or occur elsewhere. A correction fixes the immediate condition; corrective action changes the underlying process, control or management arrangement. Closure should follow an effectiveness review, not merely action completion.
- Search intent
- Resolve nonconformities in a way that addresses cause and prevents recurrence.
- Guide area
- Audit
- Review status
- Practitioner reviewed
What this means in practice
“Human error” rarely explains why the management system allowed the error to produce a nonconformity. Examine triggers, interfaces, responsibilities, workload, system design and verification.
The depth of cause analysis should match significance and recurrence risk. Lightweight methods can work for simple issues; complex or repeated failures need broader investigation.
Step-by-step implementation
- Step 1. Control the immediate condition and its consequences.
- Step 2. Assess the nonconformity’s significance, scope and potential recurrence elsewhere.
- Step 3. Analyze underlying process and control causes using evidence.
- Step 4. Select actions proportionate to cause and risk.
- Step 5. Assign owners, resources and completion criteria.
- Step 6. Implement actions and retain objective evidence.
- Step 7. Review effectiveness after enough operating time, then close or reopen.
What to prepare
- finding criteria and evidence
- correction or containment record
- scope and recurrence assessment
- cause analysis and supporting data
- action plan and implementation evidence
- effectiveness criteria, result and approval
Documents, records and evidence
| Area or field | Example | Why it matters |
|---|---|---|
| Weak cause | Human error | Does not explain system conditions |
| Better cause | Termination notifications rely on manual email and no reconciliation exists between HR departures and active directory accounts | Identifies process dependency and missing verification |
| Correction | Disable the sampled former employee account | Resolves immediate condition |
| Corrective action | Automate the HR trigger, add daily exception reporting and monthly reconciliation | Addresses cause and broader recurrence |
| Effectiveness | Three-month reconciliation shows all departures disabled within target | Verifies sustained result |
Correction versus corrective action
If a backup restoration test fails, rerunning the test after repairing one job is a correction. Investigating why failures were not detected, improving monitoring and escalation, updating ownership, and verifying several later restorations is corrective action.
What an auditor will look for
- Clear link from finding to correction, cause and selected action.
- Scope review covering similar processes, sites or systems.
- Objective completion evidence and accountable approval.
- Effectiveness criteria applied after a meaningful operating period.
An auditor may select different samples or follow unexpected evidence. Prepare authoritative records and owners who can explain normal operation, exceptions and improvement rather than rehearsed answers.
Common mistakes
- Renaming the correction as corrective action.
- Selecting retraining before establishing the cause.
- Closing an action on its due date without evidence.
- Ignoring whether the same weakness exists elsewhere.
Practical checklist
- □ Immediate consequences are controlled.
- □ Cause analysis uses evidence and examines the management system.
- □ Potential recurrence elsewhere is evaluated.
- □ Actions address identified causes and have accountable owners.
- □ Completion and effectiveness are evaluated separately.
- □ Closure is approved with retained evidence.
Frequently asked questions
What is the difference between correction and corrective action?
Correction fixes the detected condition; corrective action removes or reduces the cause to prevent recurrence.
Is root-cause analysis always required?
The organization must evaluate causes. Choose a proportionate method and depth based on significance, complexity and recurrence.
When can an action close?
After implementation evidence and a suitable effectiveness review support the closure decision.
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