Energy Cybersecurity
OT Cybersecurity and IEC 62443 for Energy Facilities
Operational-technology security aims to keep systems controlling physical processes safe and available. Enterprise IT controls should be adapted to process impact, maintenance windows and legacy-equipment constraints rather than copied directly.
Asset and communication inventory
Record PLCs, RTUs, HMIs, engineering workstations, servers, network devices and remote connections with ownership, version and critical-process context. Passive discovery can reduce the risk of uncontrolled active scanning on production networks.
Zones and conduits
Group assets with similar security needs into zones and define permitted flows through controlled conduits. Least privilege, firewall rules and monitored transition points limit attack propagation compared with a flat network.
Patching, access and incident readiness
Apply patches in controlled windows after vendor review and testing. Remote access should use time-bound approval, multifactor authentication and session logging, while incident plans include safe manual operation and recovery.
Sources
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