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IEC 62443 Cybersecurity: Implementing Zones, Conduits & Security Levels (SL 1 to 4)

Comprehensive implementation blueprint for the global OT cybersecurity benchmark IEC 62443: threat modeling, defining physical and logical zones, conduits, and target security levels.

  • IEC 62443 is the international gold standard for Industrial Automation and Control Systems (IACS) cybersecurity.
  • Security Level 1 protects against casual eavesdropping; Security Level 3 protects against sophisticated nation-state actors.
  • Zones partition assets sharing common security requirements; Conduits are the only authorized channels through which zones communicate.

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