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Application & OT Security · Intermediate

IEC 62443

The ISA/IEC series of standards for cybersecurity of industrial automation and control systems (IACS), covering asset owners, integrators and product suppliers.

Definition

The series is organized into General (62443-1), Policies and Procedures (62443-2, including 2-1 security programs and 2-4 service providers), System (62443-3, including 3-2 risk assessment with zones and conduits and 3-3 system requirements and security levels) and Component (62443-4, including 4-1 secure product development lifecycle and 4-2 component requirements). It defines Security Levels SL 1-4 and foundational requirements.

Example

A PLC vendor certifies its development process to 62443-4-1 and its product to 62443-4-2 SL 2.

Exam tip

Know the four parts and that 4-1 is the secure development lifecycle for product suppliers.

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