Utilize Safety Instrumented Systems (SIS) to provide an additional layer of protection to hazard scenarios that may cause property damage. A SIS will typically include sensors, logic solvers, and a final control element that can be used to automatically respond to an hazardous condition (Citation: A G Foord, W G Gulland, C R Howard, T Kellacher, W H Smith 2004) . Ensure that all SISs are segmented from operational networks to prevent them from being targeted by additional adversarial behavior.
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