DIN EN ISO/IEC 27000:2026-11

Understanding and effectively implementing information security management systems

The DIN EN ISO/IEC 27000 provides an overview of information security management systems (ISMS) and explains the fundamental concepts, principles and relationships within the ISO/IEC 27000 series of standards. It helps organizations understand the structure of an ISMS and assess the relationships between the relevant standards for information security, cybersecurity and privacy protection.

What is DIN EN ISO/IEC 27000 about?

The standard describes the fundamentals of information security and the key principles of an information security management system. It focuses on the concepts of confidentiality, integrity, availability, risk, risk treatment and information security controls, as well as their significance for organizations. In addition, the standard explains the role of an ISMS and how the various standards within the ISO/IEC 27000 family fit together.

The current edition no longer serves as a terminology standard; instead, it focuses on understanding information security management and its standards framework.

Topics covered

• Fundamentals of information security
• Confidentiality, integrity and availability
• Information security management systems (ISMS)
• Risk management and risk treatment
• Information security controls
• Requirements and benefits of an ISMS
• Integration of information security into business processes
• Relationships within the ISO/IEC 27000 series of standards
• Positioning of ISO/IEC 27001 and other ISMS standards

Practical relevance

Information security is now a key component of corporate governance. DIN EN ISO/IEC 27000 helps organizations understand the fundamentals of effective information security management and place the requirements of the ISO/IEC 27000 family in context. It therefore provides an ideal starting point for implementing or further developing an ISMS.

The standard is particularly valuable for companies working with ISO/IEC 27001, information security risks, cybersecurity or certification projects. It establishes a shared understanding of the key terms, concepts and relationships within modern information security management systems.

Changes compared with DIN EN ISO/IEC 27000:2020-06

The 2026 edition has been fundamentally revised. The most important changes include:

• Change to the title of the standard
• Restructuring of the document with a focus on providing an overview of the ISMS standards family
• Addition of a comprehensive section on information security concepts and principles
• Expanded explanations of information security management systems (ISMS) and their significance
• Revision of Clause 3, focusing on the terms required for the concepts
• ISO/IEC 27000 is no longer a terminology document

Target audience

• Information security officers
• ISMS managers
• IT security managers
• Cybersecurity professionals
• Auditors and certification bodies
• Quality and risk managers
• Information security consultants
• Organizations undertaking ISO/IEC 27001 projects

Conclusion

DIN EN ISO/IEC 27000 provides an introduction to the world of information security management systems. By explaining fundamental concepts, principles and relationships between standards, it helps organizations understand information security systematically and successfully implement the requirements of the ISO/IEC 27000 family.

This document replaces DIN EN ISO/IEC 27000:2020-06 .

And replaced by 2026-11 for:: DIN EN ISO/IEC 27000:2020-06 , DIN EN ISO/IEC 27000:2025-08 .