Question 570
A security operations shift handoff reports this condition: A custom multi-stage handler joins alerts that occurred many days apart and generates spurious campaign incidents. What is the most appropriate response to the reported operational problem?
Explanation
Correct Answer
The underlying cause is: An excessive correlation window can connect unrelated events that happen to share a hostname or indicator. The correct response is: Tighten the temporal window and grouping to the actual attacker behavior and test historical false positives. Confirm by checking: Events from unrelated days no longer join while known genuine short-interval sequences still correlate.
Incorrect Answers
That intervention addresses notification profile missing on handler, where Event generation does not itself prove a notification action is configured and connected to the correct handler. Here, the relevant failure is instead: An excessive correlation window can connect unrelated events that happen to share a hostname or indicator.
That intervention addresses incorrect event severity assignment, where Alert severity configured without business impact or enforcement outcome may distort incident response priorities. In this question the necessary remedy is “Tighten the temporal window and grouping to the actual attacker behavior and test historical false positives”, which this alternative does not provide.
That intervention addresses correlation handler ordered security stages, where A simple event count does not establish the order or relationship of multiple steps required for an attack pattern. The observed condition is a custom multi-stage handler joins alerts that occurred many days apart and generates spurious campaign incidents; this mechanism addresses another problem.