How to Draft a ISO27001 Audit Plan

Drafting an ISO 27001 audit plan involves careful planning and consideration of various aspects. Here's a step-by-step guide:

1. Define the Audit Objectives:
- Clearly outline the purpose and objectives of the ISO 27001 audit.
- Specify whether it's a compliance audit, certification audit, or a regular internal audit for continual improvement.

2. Scope Definition:
- Clearly define the scope of the audit, including organizational units, locations, and information assets to be covered.

3. Identify Audit Criteria:
- Establish the criteria against which the audit will be conducted. This includes ISO 27001 requirements, legal and regulatory requirements, and organizational policies.

4. Select Audit Team:
- Assemble a competent audit team with individuals possessing the necessary skills and knowledge in information security and ISO 27001.

5. Prepare an Audit Schedule:
- Develop a detailed schedule outlining the audit timeline, including dates for planning, on-site activities, reporting, and follow-up.

6. Risk Assessment:
- Conduct a risk assessment to identify potential risks and challenges associated with the audit process. Develop strategies to mitigate these risks.

7. Document Review:
- Plan the review of relevant documentation, including the organization's Information Security Management System (ISMS) documentation, policies, procedures, and records.

8. Audit Methodology:
- Define the audit methodology to be used, considering whether a sampling approach or a comprehensive review of all relevant processes will be conducted.

9. Communication Plan:
- Develop a communication plan to inform relevant stakeholders about the upcoming audit, including auditees, management, and other involved parties.

10. Audit Checklist:
- Develop a comprehensive checklist based on ISO 27001 requirements, covering each area to be audited. This will serve as a guide during the audit.

11. Audit Techniques:
- Determine the audit techniques to be used, such as interviews, document reviews, observations, and testing of controls.

12. On-Site Activities:
- Plan and organize on-site audit activities, ensuring that the audit team has access to the necessary facilities and personnel.

13. Evidence Collection:
- Outline procedures for collecting evidence to support audit findings, ensuring that evidence is relevant, reliable, and sufficient.

14. Audit Reporting:
- Define the format and content of the audit report. Include details on non-conformities, areas for improvement, and overall compliance with ISO 27001.

15. Follow-Up Procedures:
- Establish procedures for monitoring and verifying corrective actions taken by the organization in response to audit findings.

16. Review and Approval:
- Review the audit plan with key stakeholders for approval before the commencement of the audit.

17. Continuous Improvement:
- Incorporate feedback and lessons learned from each audit into future audit plans to ensure continuous improvement of the auditing process.

By following these steps, you can create a comprehensive ISO 27001 audit plan that aligns with the organization's objectives and effectively assesses its information security management system.