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CYBerseCurItY For InDustrIAL ControL sYsteMs
that measurements and associated metrics from dierent, critical
process elements are converted to a common scale and combined
somehow, for instance, averaged.
A large majority of vulnerabilities in ICS are rate dependent,
meaning availability issues associated with network outage, delay, jit-
ter, and loss.
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From this basis it becomes a matter of measuring net-
work characteristics from in-line elements (switches/routers/rewalls/
proxies) impacting OEE, and comparing them against the theoretical
ideal or design target for the network.
Some metrics associated with ICS devices (for example, PLC,
RTU), which are associated with availability, include issues such as:
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• Malfunctions
• ...