ISA/IEC 62443

Industrial/ICS 🏭 • Difficulty: premium

Definition

ISA/IEC 62443 is a family of standards and guidance that define how to secure Industrial Automation and Control Systems (IACS) across people, process, and technology—covering policies, system design, and component requirements.

Examples

  • A plant adopts zones and conduits per 62443 to separate HMIs, PLCs, SIS, and the IDMZ, then sets target Security Levels for each zone.
  • Procurement requires service providers to meet ISA/IEC 62443-2-4 and products to meet 62443-4-2 controls; the integrator follows 62443-4-1 for secure development.

Discover 🔎

ISA/IEC 62443 is the industrial world’s playbook for cybersecurity. Unlike a single checklist, it’s a suite that aligns leadership, engineering, operations, and vendors around a common language and set of outcomes. It scales from a single line to multi-site fleets and helps you design defensible architectures, choose secure products, and run a sustainable OT security program.

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