DIN EN ISO/IEC 27019:2026-03

Implementing information security effectively in the energy supply sector

DIN EN ISO/IEC 27019 describes information security controls for the energy supply sector and supplements the requirements of ISO/IEC 27002:2022 with sector-specific provisions for energy utilities. It supports operators of process control and automation systems in systematically implementing information security, cybersecurity and the protection of critical infrastructure and in ensuring the secure supply of electricity, gas, oil and heat.

What is DIN EN ISO/IEC 27019 about?

The standard defines sector-specific security controls for process control, automation and supervisory control systems in the energy supply sector. It addresses organizational, people-related, physical and technological controls for protecting information, communications networks and business-critical systems. Its key areas include risk management, access control, network security, incident management, and the protection of ICS and SCADA systems. In addition, the standard contains further energy-sector-specific requirements for control centers, equipment rooms, remote sites, process data communication, legacy systems and emergency communication.

Topics covered

• Information security and cybersecurity in the energy supply sector
• Protection of process control systems and SCADA systems
• Risk management and security requirements for critical infrastructure
• Access control, identity management and authentication
• Supplier, customer and third-party management
• Network security, network segmentation and secure communication
• Remote access, remote work and remote maintenance
• Security incident management and business continuity
• Protection of control centers, equipment rooms and remote sites
• Handling legacy systems, safety functions and process data communication

Practical relevance

The increasing digitalization of energy supply networks, smart grids and process control systems is raising information security requirements. DIN EN ISO/IEC 27019 helps energy utilities to systematically identify cyber risks, implement security controls and ensure the availability of critical processes. It provides a sector-specific basis for protecting sensitive systems and supports the secure control and monitoring of energy infrastructure.

The standard is particularly relevant to operators of critical infrastructure and energy utilities. It supports the implementation of sector-specific security requirements and helps to reduce cyber risks and ensure the availability and integrity of energy-related processes.

Changes compared with DIN EN ISO/IEC 27019:2020-08

The 2026 edition has been aligned with the structure and content of ISO/IEC 27002:2022. The main changes include:

• Alignment of the controls with the organizational, people-related, physical and technological themes of ISO/IEC 27002:2022
• Updates to the “Guidance” and “Other information” sections to avoid overlap with ISO/IEC 27002:2022
• Enhancement of the energy-sector-specific controls with additional attributes
• Editorial revision of the standard

Target audience

• Information security officers
• OT and ICS security managers
• Operators of energy supply networks
• Grid operators and energy utilities
• Administrators of SCADA and process control systems
• System integrators and service providers
• Auditors and certification bodies
• Cybersecurity and critical infrastructure professionals

Conclusion

DIN EN ISO/IEC 27019 supplements the requirements of ISO/IEC 27002 with sector-specific security controls for the energy supply sector. It helps energy utilities to systematically implement cybersecurity requirements and ensure the secure, long-term operation of critical energy infrastructure.

This document replaces DIN EN ISO/IEC 27019:2020-08 .