Learning OT Cybersecurity - Zoning Your House

Learning OT Cybersecurity - Zoning Your House.
Imagine your house. You don't let the delivery driver walk into your bedroom. You keep them at the door.
In cybersecurity, we use the "Purdue Model" to do this.
Level 0: The physical Breaker, Transformer, CT, VT, Isolators, etc.
Level 1: The IEDs controlling them.
Level 2: The SCADA and HMI Room.
Lesson: We must build walls (Firewalls) between these levels so a virus in the office doesn't reach the breaker.

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