Digital protection and control devices that are specifically designed to detect abnormal conditions and automatically minimize adverse impacts to critical utility supplies (such as power, water, or climate control) provide a resilience mechanism that reduces the risk and impact of utility interruptions in hospital building control systems. This aligns with industrial control system (ICS) security best practices for critical infrastructure environments, where protective relays and control devices are engineered to isolate faults and maintain continuity of critical services. In contrast, unrestricted network connectivity increases the attack surface, denying maintenance staff access prevents legitimate incident response, and devices that rapidly cycle equipment while concealing activity describe malicious/destructive behavior rather than a protective control.
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