ISO 27001 Implementer Guide

Purpose

This guide is the implementation view of the vault. It explains how to build and operate an ISMS using the existing ISO/IEC 27001 notes, Annex A controls, templates, evidence packs, and ISO/IEC 27005 risk-management notes.

Use it when the question is:

• what do we need to design;
• what decisions are required;
• what documents and records must exist;
• how risks connect to controls;
• how to prepare for audit without building paperwork theatre.

Core implementation path

1. ISMS Implementation Roadmap
2. A.5 Organizational Controls Implementation Guide
3. A.6 People Controls Implementation Guide
4. A.7 Physical Controls Implementation Guide
5. A.8 Technological Controls Implementation Guide
6. ISO 27005 Risk Management Guide MOC
7. ISO 27001 Implementer Auditor ISO 27005 Mapping
8. A.5 Controls Implementation Audit Risk Mapping
9. A.6 People Controls Implementation Audit Risk Mapping
10. A.7 Physical Controls Implementation Audit Risk Mapping
11. A.8 Technological Controls Implementation Audit Risk Mapping

Source library

• Information Security Management System
• ISO 27001 Clauses 4-10 vs Annex A
• Risk Assessment
• Statement of Applicability
• A.5 Organizational Controls MOC
• A.6 People Controls MOC
• A.7 Physical Controls MOC
• A.8 Technological Controls MOC
• Templates MOC
• Audit Evidence Index

Implementer rule

Do not implement Annex A controls as a checklist detached from risk. Use Risk Assessment and Statement of Applicability to justify selected controls, exclusions, owners, evidence, and review frequency.

Research basis

• ISO describes ISO/IEC 27001 as the ISMS requirements standard and states that an ISMS preserves confidentiality, integrity, and availability by applying a risk management process.
• ISO describes ISO/IEC 27002 as guidance and best-practice controls, not a certifiable standard.
• ISO describes ISO/IEC 27005:2022 as guidance for managing information security risks to support an ISO/IEC 27001-based ISMS.

External references

• ISO/IEC 27001:2022 overview
• ISO/IEC 27002:2022 overview
• ISO/IEC 27005:2022 overview