In this ultimate how to implement guide to ISO 27001 Annex A 5.22 Monitoring, Review and Change Management of Supplier Services, you will learn directly from an ISO 27001 Lead Auditor:
- The requirement of the control
- The required implementation steps
- The minimum requirement
I am Stuart Barker, the ISO 27001 Lead Auditor and author of the Ultimate ISO 27001 Toolkit.
Using over 30 years of industry experience across hundreds of audits, I’m giving you the exact templates, walkthroughs, and practical examples you need to achieve ISO 27001 certification.
Table of contents
- ISO 27001 Annex A 5.22 Monitoring, Review and Change Management of Supplier Services Implementation Checklist
- 1. Establish a Manual Supplier Performance Log
- 2. Conduct Scheduled Quarterly Service Reviews
- 3. Verify Supplier Independent Audit Reports (Manual Validation)
- 4. Implement a Formal Supplier Change Request Procedure
- 5. Perform Regular Vulnerability Scans on Supplier Interfaces
- 6. Review Supplier Business Continuity (BCP) Test Results
- 7. Audit Supplier Access Logs and Identity Management
- 8. Update the Supplier Risk Assessment Post-Change
- 9. Enforce Manual Notification of Supplier Infrastructure Changes
- 10. Maintain a Local Physical Audit Trail
- ISO 27001 Annex A 5.22 SaaS / GRC Platform Implementation Failure Checklist
Implementing ISO 27001 Annex A 5.22 is the governance process of verifying that third-party vendors adhere to security obligations. The primary implementation requirement involves manual log audits and formal quarterly reviews, which provides the business benefit of continuous risk oversight and technical assurance across the supply chain ecosystem.
ISO 27001 Annex A 5.22 Monitoring, Review and Change Management of Supplier Services Implementation Checklist
Use this implementation checklist to achieve compliance with ISO 27001 Annex A 5.22. Effective governance happens through rigorous manual inspection of logs and physical performance reviews, not via automated ‘health check’ icons in a GRC dashboard.
1. Establish a Manual Supplier Performance Log
Control Requirement: Regularly monitor supplier service performance against the security requirements in the agreement.
Required Implementation Step: Create a local spreadsheet or database to track monthly performance. Manually input data from supplier service reports, focusing on actual downtime and security incident response times rather than marketing-led uptime percentages.
Minimum Requirement: A 12-month trailing log of service levels for every critical ICT supplier.
2. Conduct Scheduled Quarterly Service Reviews
Control Requirement: Review supplier service reports and conduct regular meetings to address security performance.
Required Implementation Step: Schedule and hold a formal meeting with the supplier’s account manager. Document the minutes, specifically noting any security deviations, and ensure these are signed off by your internal Technical Lead to prove oversight.
Minimum Requirement: Minutes from at least four quarterly reviews per year for ‘High Risk’ suppliers.
3. Verify Supplier Independent Audit Reports (Manual Validation)
Control Requirement: Review supplier audit reports and security assessments to ensure compliance with security obligations.
Required Implementation Step: Do not just collect a SOC2 or ISO 27001 certificate. Open the full report, read the ‘Observations’ or ‘Exceptions’ section, and manually verify how the supplier addressed those specific failures in relation to your data.
Minimum Requirement: A stored PDF of the supplier’s latest full audit report with internal notes on identified exceptions.
