During an attack the adversary disables the alarm annunciation path and blocks reporting messages from field devices so operators miss the event. Which tactic is this?
- A.Impair Process Control
- B.Lateral Movement tactic
- C.Inhibit Response Function
- D.Privilege Escalation
Why C is correct
Blocking alarms and reporting messages stops the plant from responding to a developing event, which is Inhibit Response Function. Impair Process Control changes the process itself, and the other two tactics describe entry and reconnaissance.
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