Analytic 1870

Real-time network monitoring identifies a source issuing write commands to the same Input/Output (I/O) point or register address at a rate significantly exceeding the device's configured scan cycle. The write rate itself is the signature, with source identity retained as corroborating context; treat the rate deviation as suspicious only after excluding tuning, commissioning, failover, and fault-recovery activity. 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. Yleiskatsaus

1.1 Viittaukset

1.2 Tunnistetut vaatimukset

1.3 Liittyvät säädökset

2. Tunnistetut vaatimukset

3. Liittyvät säädökset

Linkitetyt tehtävät

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