Overview
EN ISO/IEC 27001:2023 (adoption of ISO/IEC 27001:2022) specifies the requirements for establishing, implementing, maintaining and continually improving an information security management system (ISMS). Published by CEN as a European Standard, it applies to organizations of any type, size or nature and requires tailored assessment and treatment of information security risks. Conformity requires meeting all requirements in Clauses 4–10 (context, leadership, planning, support, operation, performance evaluation, improvement). The standard is aligned with the harmonized management-systems structure and ISO/IEC 27002:2022.
Key topics and requirements
- Scope and context: define the organization’s context and the scope of the ISMS, including interested parties and their requirements.
- Leadership and policy: top management commitment, assignment of roles, responsibilities and an information security policy.
- Risk management: systematic information security risk assessment and risk treatment tailored to organizational needs (requirements for assessing and treating information security risks are core).
- Objectives and planning: measurable information security objectives and plans to achieve them.
- Support and competence: resources, competence, awareness, communication and documented information to operate the ISMS.
- Operational controls: operational planning and control of information security processes, including controls referenced in Annex A (information security controls reference).
- Performance evaluation: monitoring, measurement, internal audit and management review to evaluate ISMS effectiveness.
- Improvement: continual improvement, nonconformity handling and corrective actions.
Practical applications and who uses it
EN ISO/IEC 27001:2023 is used by organizations seeking to:
- Build an ISMS to protect confidentiality, integrity and availability of information.
- Demonstrate compliance and achieve third‑party ISO/IEC 27001 certification for customers, partners or regulators.
- Implement structured cybersecurity and privacy protection practices integrated with business processes.
- Manage supplier risk, contractual security obligations and cloud or outsourcing arrangements.
Primary users include CISOs, IT/security managers, risk and compliance teams, internal auditors, consultants and certification bodies. Small and large organizations adopt the standard to formalize risk-based security, strengthen incident readiness, and support regulatory/compliance requirements.
Related standards
- ISO/IEC 27002:2022 - guidance on selection and implementation of information security controls (aligned with Annex A).
- Other management-system standards (e.g., ISO 9001, ISO 22301) - for integrated management systems.
Keywords: EN ISO/IEC 27001:2023, ISO/IEC 27001, information security management system, ISMS, cybersecurity, privacy protection, risk assessment, ISMS certification.
