ISO/IEC 27019: Information security controls for the energy utility industry

ISO/IEC 27019 provides guidelines for information security management specific to the energy utility industry, addressing the unique security requirements of process control systems used in this sector. This standard extends the controls defined in ISO/IEC 27002 and tailors them to the specific needs of energy utilities, including power generation, transmission, and distribution.

Key Components of ISO/IEC 27019

1. Introduction:
   • Purpose: Explains the objective of ISO/IEC 27019, which is to provide guidelines for securing process control systems in the energy utility industry.
   • Audience: Intended for organizations in the energy sector, including those involved in power generation, transmission, and distribution.
2. Scope:
   • Applicability: Applicable to all types of organizations within the energy utility industry that need to manage information security for process control systems.
3. Normative References:
   • ISO/IEC 27000: References terms and definitions used throughout the ISO/IEC 27000 family of standards.
   • ISO/IEC 27002: Provides the foundational controls which ISO/IEC 27019 extends and adapts for the energy sector.

Structure and Content

ISO/IEC 27019 adapts the controls from ISO/IEC 27002 to address the specific requirements of process control systems in the energy utility industry. It is structured around the same 14 control domains as ISO/IEC 27002, with additional guidelines and controls specific to the energy sector.

1. Clause 5: Information Security Policies:
   • Security Policies for Process Control Systems: Establish policies specifically for securing process control systems in energy utilities.
2. Clause 6: Organization of Information Security:
   • Roles and Responsibilities: Define and document roles and responsibilities for securing process control systems.
   • Integration with IT Security: Ensure integration and coordination between process control systems security and IT security.
3. Clause 7: Human Resource Security:
   • Security Training for Process Control Systems: Provide specialized training for personnel involved in managing and operating process control systems.
4. Clause 8: Asset Management:
   • Inventory of Process Control Assets: Maintain an inventory of all process control assets, including hardware, software, and data.
   • Classification and Handling: Classify and handle process control information based on its sensitivity and criticality.
5. Clause 9: Access Control:
   • Access Controls for Process Control Systems: Implement strict access controls to ensure only authorized personnel can access process control systems.
   • Segregation of Duties: Ensure segregation of duties to minimize risks associated with unauthorized access and changes.
6. Clause 10: Cryptography:
   • Use of Cryptographic Controls: Use cryptographic controls to protect the confidentiality, integrity, and authenticity of information in process control systems.
7. Clause 11: Physical and Environmental Security:
   • Securing Process Control Facilities: Implement physical security measures to protect facilities housing process control systems.
   • Environmental Controls: Ensure environmental controls (e.g., temperature, humidity) to protect process control equipment.
8. Clause 12: Operations Security:
   • Operational Procedures for Process Control Systems: Develop and implement procedures for securely operating and maintaining process control systems.
   • Change Management: Implement change management processes specific to process control systems to ensure changes are reviewed and approved.
9. Clause 13: Communications Security:
   • Network Security for Process Control Systems: Secure communications networks used by process control systems, including segmentation and encryption.
   • Data Transfer Security: Protect data transfers within and between process control systems.
10. Clause 14: System Acquisition, Development, and Maintenance:
    • Secure Development of Process Control Systems: Ensure secure development practices for process control systems and applications.
    • Patch Management: Implement patch management processes to keep process control systems updated and secure.
11. Clause 15: Supplier Relationships:
    • Managing Supplier Risks: Manage security risks associated with suppliers and third parties involved in process control systems.
    • Supplier Agreements: Include specific security requirements in contracts with suppliers.
12. Clause 16: Information Security Incident Management:
    • Incident Response for Process Control Systems: Develop and implement incident response plans specifically for process control systems.
    • Incident Reporting and Handling: Ensure timely reporting and effective handling of security incidents affecting process control systems.
13. Clause 17: Information Security Aspects of Business Continuity Management:
    • Business Continuity for Process Control Systems: Ensure business continuity plans address the resilience and recovery of process control systems.
    • Disaster Recovery Planning: Implement disaster recovery plans specific to process control systems.
14. Clause 18: Compliance:
    • Legal and Regulatory Compliance: Ensure compliance with legal, regulatory, and contractual requirements related to process control systems.
    • Security Audits: Conduct regular security audits to verify compliance and effectiveness of controls.

Detailed Guidance

1. Risk Management for Process Control Systems:
   • Risk Assessment: Conduct risk assessments to identify and evaluate risks specific to process control systems.
   • Risk Treatment: Develop and implement risk treatment plans to mitigate identified risks.
2. Secure Configuration and Hardening:
   • Configuration Standards: Develop and apply secure configuration standards for process control systems.
   • System Hardening: Implement system hardening measures to reduce vulnerabilities.
3. Continuous Monitoring and Improvement:
   • Monitoring Controls: Continuously monitor process control systems to detect security incidents and anomalies.
   • Improvement Processes: Implement processes for continuous improvement of security controls and practices.

Benefits of ISO/IEC 27019

• Enhanced Security for Critical Infrastructure: Provides specific guidelines for securing process control systems, which are critical for the operation of energy utilities.
• Compliance: Supports compliance with industry-specific regulations and standards, ensuring the protection of critical infrastructure.
• Risk Management: Enhances the ability to manage information security risks specific to the energy sector.
• Integration with IT Security: Ensures coordination between process control systems security and IT security, providing a holistic approach to information security.
• Stakeholder Confidence: Builds confidence among stakeholders by demonstrating a commitment to securing critical infrastructure.

ISO/IEC 27019 is a valuable resource for organizations in the energy utility industry seeking to implement robust security controls for their process control systems, ensuring the continuous protection and reliability of their critical infrastructure.