What Is ISA/IEC 62443?

ISA/IEC 62443 is the world’s leading series of standards dedicated to securing Industrial Automation and Control Systems (IACS). Developed jointly by the International Society of Automation (ISA) and the International Electrotechnical Commission (IEC), the standard provides a comprehensive framework for protecting industrial control systems across industries such as manufacturing, energy, transportation, healthcare, and building automation.

ISA/IEC 62443 addresses the entire industrial cybersecurity lifecycle—from risk assessment and secure system design to implementation, operation, maintenance, and continual improvement. It recognizes that effective cybersecurity depends on technology, people, and organizational processes working together.

Key Components of ISA/IEC 62443

• Part 1 – General Concepts
  • Defines common terminology, security concepts, reference models, zones, conduits, and security levels.
  • Provides the foundation for the entire ISA/IEC 62443 series.
• Part 2 – Security Program Requirements
  • Establishes cybersecurity management requirements for asset owners and service providers.
  • Includes guidance for cybersecurity management systems, patch management, and service provider requirements.
• Part 3 – System Security Requirements
  • Guides organizations in performing risk assessments, defining security zones and conduits, and establishing Target Security Levels (SL-T).
  • Specifies system-level security requirements for designing secure industrial automation systems.
• Part 4 – Component Security Requirements
  • Defines secure development lifecycle (SDL) requirements for product suppliers.
  • Specifies technical security capabilities required for industrial control system components.

Why Is IACS Security Important?

Industrial Automation and Control Systems (IACS) and Operational Technology (OT) networks are essential to modern industrial operations. They support manufacturing, energy production, transportation, utilities, healthcare, and other critical infrastructure where system availability, reliability, and safety are vital.

Cyberattacks targeting industrial environments can result in production downtime, financial losses, environmental damage, and safety risks. ISA/IEC 62443 helps organizations reduce these risks by providing a structured approach to securing industrial systems throughout their entire lifecycle.

By implementing ISA/IEC 62443, organizations strengthen operational resilience, improve cybersecurity governance, and ensure secure-by-design industrial systems while maintaining safety and business continuity.

Benefits of PECB ISA/IEC 62443 Certification

A PECB ISA/IEC 62443 certification demonstrates your ability to:

• Understand and apply the ISA/IEC 62443 framework in industrial cybersecurity environments.
• Perform IACS risk assessments, define security zones and conduits, and establish Target Security Levels (SL-T).
• Design and implement secure industrial systems using secure-by-design principles.
• Manage patching, maintenance, and continual improvement throughout the IACS lifecycle.
• Evaluate suppliers, products, and service providers against ISA/IEC 62443 requirements.
• Adapt traditional IT cybersecurity practices to Operational Technology (OT) environments while preserving safety and system availability.
• Communicate effectively with asset owners, system integrators, vendors, and other stakeholders using internationally recognized terminology.
• Demonstrate globally recognized expertise in industrial automation and control system cybersecurity.

How Do I Get Started?

PECB ISA/IEC 62443 training and certification programs provide the knowledge and practical skills needed to secure Industrial Automation and Control Systems using internationally recognized best practices.

Whether you are an engineer, cybersecurity professional, consultant, or system integrator, earning a PECB ISA/IEC 62443 certification validates your expertise and supports career growth in industrial cybersecurity.

For more information or to begin your certification journey, contact support@pecb.com.