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How newly exposed security weaknesses in industrial wireless, cloud-based interfaces, and nested PLCs serve as a wake-up call for hardening the physical process control layer of the OT network.
Forescout has published a proof of concept for a ‘ransomware’ attack that uses IoT for access, IT for traversal, and OT (especially PLCs) for detonation. It is called R4IoT and is described as the next generation of ransomware.