IEC 62443
Industrial Automation and Control Systems Security
International standard series for security of industrial automation and control systems (IACS).
What is IEC 62443?
IEC 62443 is a series of standards developed by the International Electrotechnical Commission (IEC) for securing Industrial Automation and Control Systems (IACS). The series provides a comprehensive framework addressing security for industrial environments including manufacturing, utilities, oil and gas, and critical infrastructure.
The standard is organized into four tiers: General (concepts and models), Policies and Procedures, System, and Component requirements. IEC 62443 is increasingly required for industrial equipment suppliers and adopted by organizations operating critical infrastructure.
Who Needs IEC 62443?
- Manufacturing companies
- Critical infrastructure operators
- Industrial control system vendors
- SCADA system operators
- Industrial automation integrators
Key Requirements
Core compliance areas for IEC 62443
Security Levels
Define and implement appropriate Security Levels (SL 1-4) based on risk assessment.
Zone and Conduit Model
Segment IACS into zones with controlled conduits for inter-zone communication.
Security Management System
Establish policies, procedures, and practices for IACS security management.
Patch Management
Implement patch management appropriate for operational technology environments.
Secure Development
For component suppliers, implement secure development lifecycle practices.
Benefits of IEC 62443 Compliance
- Comprehensive OT security framework
- International recognition
- Risk-based approach for industrial environments
- Supply chain security requirements
- Integration with safety systems
- Regulatory alignment (NERC CIP, etc.)
Official Resources
Related Frameworks
NERC CIP
Mandatory cybersecurity standards for the bulk electric system in North America.
NIST CSF
Voluntary framework providing standards and best practices for managing cybersecurity risk.
ISO 27001
The international standard for information security management systems (ISMS).