Analytic 2259

Real-time monitoring identifies a vendor firmware update utility executing outside a scheduled maintenance window or invoked by an account not in the approved firmware management role, immediately followed by a network session to a field device IP on its firmware protocol port. OT operational-fidelity gate: Alert only when the action is not attributable to an authorized operator/engineering source for the specific target and function, and it is either outside an approved change/maintenance window or lacks matching change-control context; where telemetry permits, require corroborating device, configuration, or process-state effect. Suppress activity that fully matches approved maintenance, commissioning, failover, recovery, or tested control procedures.

1. Översikt

1.1 Referenser

1.2 Identifierade krav

1.3 Relaterade regleringar

2. Identifierade krav

3. Relaterade regleringar

Länkade ärenden

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