In this ultimate how to implement guide to ISO 27001 Annex A 5.18 Access Rights, 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 5.18 Access Rights Implementation Checklist
- 1. Formalise the Topic-Specific Access Control Policy
- 2. Establish a Manual Provisioning Workflow
- 3. Execute Role-Based Access Control (RBAC) Mapping
- 4. Restrict Privileged Access Rights
- 5. Conduct Periodic Manual Access Reviews
- 6. Implement Internal Transfer Modification Protocols
- 7. Enforce Immediate Termination Revocation
- 8. Audit Physical Access Rights Integration
- 9. Review Database and Application-Level Permissions
- 10. Maintain an Evidence Log for Reconciliation
- ISO 27001 Annex A 5.18 SaaS / GRC Platform Implementation Failure Checklist
Implementing ISO 27001 Annex A 5.18 is a fundamental security practice that ensures least privilege access rights are managed throughout the user lifecycle. By enforcing technical verification and role-based controls, organizations realize the business benefit of reduced internal data breach risks and total regulatory compliance.
ISO 27001 Annex A 5.18 Access Rights Implementation Checklist
Use this implementation checklist to achieve compliance with ISO 27001 Annex A 5.18. Effective access control is maintained through manual verification and technical rigour at the asset level, rather than relying on the superficial visualisations of a GRC dashboard.
1. Formalise the Topic-Specific Access Control Policy
Control Requirement: A policy must be established, documented, and reviewed based on business and security requirements for access.
Required Implementation Step: Draft a manual policy document that defines the ‘Least Privilege’ principle for every department. Ensure it explicitly bans shared accounts and dictates that access is granted based on specific job roles rather than seniority.
Minimum Requirement: A signed-off Access Control Policy mapped to your current organisational structure.
2. Establish a Manual Provisioning Workflow
Control Requirement: Access rights must be provisioned and assigned in accordance with the access control policy.
Required Implementation Step: Create a paper-based or ticket-driven authorisation trail where every new account requires a formal signature from the asset owner. Verify that the system administrator only acts once the manual authorisation is timestamped and filed.
Minimum Requirement: A sample of 5 recent hires showing a completed ‘Access Request Form’ signed by their respective manager.
3. Execute Role-Based Access Control (RBAC) Mapping
Control Requirement: Access rights should be allocated to users based on their defined roles and responsibilities.
Required Implementation Step: Open your Active Directory or LDAP configuration and manually audit groups. Remove any individual users assigned directly to folders or databases, and re-assign them to specific security groups that match the roles defined in your HR files.
Minimum Requirement: A spreadsheet or matrix showing ‘Role vs. Permission’ for all core business applications.
