Analytic 1864

Real-time monitoring identifies a field device entering firmware update mode and receiving a large data transfer on its firmware-capable protocol port from a source not in the approved engineering workstation list, followed by a device reboot, with post-reboot firmware hash not matching the authorized inventory. 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. Преглед

1.1 Препратки

1.2 Идентифицирани изисквания

1.3 Свързани регулации

2. Идентифицирани изисквания

3. Свързани регулации

Свързани задачи

• MITREATTACK -

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