ISO 27002: The Definitive Code of Practice for Information Security Controls

What Is ISO 27002 and Why Does It Matter?

If ISO 27001 is the blueprint for an Information Security Management System (ISMS), then ISO 27002 is the detailed instruction manual. Published by the International Organization for Standardization, ISO/IEC 27002:2022 is the internationally recognised Code of Practice for Information Security Controls. It provides organisations with a comprehensive catalogue of security controls, implementation guidance, and best-practice advice to protect information assets effectively.

While ISO 27001 tells you what controls to select and manage, ISO 27002 tells you how to implement them. Together, they form the backbone of a world-class information security programme. For compliance managers, CISOs, and IT leaders, understanding ISO 27002 is essential to translating policy into practice.

The 2022 Revision: A Significant Structural Overhaul

The 2022 edition of ISO 27002 introduced the most substantial restructuring in the standard's history. The previous 2013 version contained 114 controls organised across 14 domains. The 2022 revision consolidates and modernises this into 93 controls grouped into four themes:

• Organisational Controls (37 controls) — governance, policies, roles, supplier relationships, and incident management
• People Controls (8 controls) — screening, terms of employment, awareness, training, and disciplinary processes
• Physical Controls (14 controls) — physical security perimeters, equipment protection, and secure disposal
• Technological Controls (34 controls) — access control, cryptography, network security, and secure development

Each control now includes a purpose statement, implementation guidance, and a set of attributes — including whether the control is preventive, detective, or corrective, and which cybersecurity concepts it supports. This attribute-based approach makes it far easier to map controls to specific risk scenarios, regulatory requirements, or frameworks such as NIST CSF or the EU NIS2 Directive.

Key Controls Worth Highlighting

ISO 27002:2022 introduced 11 entirely new controls that reflect the modern threat landscape. These include:

• Threat Intelligence (5.7) — organisations must collect, analyse, and act on information about threats relevant to their environment
• Information Security for Cloud Services (5.23) — a dedicated control for managing cloud security, covering acquisition, use, and exit from cloud platforms
• ICT Readiness for Business Continuity (5.30) — ensuring ICT systems can support continuity objectives during disruption
• Data Masking (8.11) — protecting sensitive data through masking, pseudonymisation, and anonymisation techniques
• Data Leakage Prevention (8.12) — implementing DLP tools and processes to prevent unauthorised data exfiltration
• Web Filtering (8.23) — controlling access to external websites to reduce exposure to malicious content
• Secure Coding (8.28) — embedding security principles throughout the software development lifecycle

These additions signal that ISO 27002 has evolved to address cloud adoption, supply chain risk, and the sophistication of modern cyberattacks — concerns that were far less prominent in 2013.

How ISO 27002 Supports ISO 27001 Certification

ISO 27001 certification requires organisations to select controls from Annex A and document their choices in a Statement of Applicability (SoA). Annex A of ISO 27001:2022 directly mirrors the 93 controls in ISO 27002. This means ISO 27002 is the authoritative reference for understanding what each Annex A control actually requires in practice.

During an ISO 27001 audit, certification bodies will assess not just whether controls are selected, but whether they are implemented effectively. ISO 27002's implementation guidance provides the evidence base for demonstrating that your controls are fit for purpose. Organisations that treat ISO 27002 as a working reference — not just a checklist — consistently perform better in audits and achieve more durable security outcomes.

Practical Implementation Guidance

Implementing ISO 27002 effectively requires a structured approach. Here are the key steps organisations typically follow:

1. Conduct a risk assessment — identify your information assets, threats, vulnerabilities, and risk appetite. This drives control selection.
2. Map controls to risks — use ISO 27002's attribute tags to match controls to specific risk scenarios and regulatory obligations.
3. Develop control policies and procedures — each control requires documented implementation. ISO 27002's guidance sections provide the starting point.
4. Assign ownership — every control needs a named owner accountable for its implementation and ongoing effectiveness.
5. Test and measure — controls must be tested regularly. ISO 27002 supports this by clarifying what effective implementation looks like.
6. Review and improve — the standard supports a continual improvement cycle aligned with ISO 27001's Plan-Do-Check-Act model.

Benefits of Aligning with ISO 27002

Organisations that implement ISO 27002 controls rigorously gain tangible advantages beyond compliance:

• Reduced breach risk — comprehensive controls address the full attack surface, from phishing and insider threats to cloud misconfigurations
• Regulatory alignment — ISO 27002 maps well to GDPR, NIS2, DORA, and sector-specific regulations, reducing duplication of effort
• Supplier confidence — customers and partners increasingly require evidence of ISO 27001/27002 alignment before sharing sensitive data
• Faster incident response — controls such as Threat Intelligence (5.7) and Incident Management (5.26) create structured response capabilities
• Competitive differentiation — ISO 27001 certification, underpinned by ISO 27002 controls, signals security maturity to prospects and regulators alike

ISO 27002 and the Broader Security Ecosystem

ISO 27002 does not operate in isolation. It integrates naturally with several companion standards:

• ISO 27001 — the certifiable ISMS standard that references ISO 27002 controls in Annex A
• ISO 27005 — information security risk management, which drives control selection
• ISO 27017 — cloud-specific security controls that extend ISO 27002 for cloud environments
• ISO 27018 — PII protection in public cloud, complementing ISO 27002's data protection controls
• ISO 27701 — privacy information management, extending the ISMS to cover GDPR obligations

This ecosystem approach means that organisations building on ISO 27002 have a clear pathway to address privacy, cloud security, and risk management within a single, coherent framework.

Start Your ISO 27002 Journey with MaxStandards

Implementing ISO 27002 is a strategic investment in your organisation's security resilience and market credibility. Whether you are beginning your ISO 27001 certification journey or strengthening an existing ISMS, aligning with ISO 27002's 93 controls provides the structured, internationally recognised foundation your security programme needs.

At MaxStandards Certification, our experienced auditors and consultants guide organisations through every stage of ISO 27001 and ISO 27002 implementation — from gap analysis and control design to certification audit and beyond. Contact us today to learn how we can help you build a security posture that satisfies regulators, reassures customers, and stands up to modern threats.