CAS-004 Security Operations Practice Question
A company uses a SIEM with User Behavior Analytics (UBA). The UBA generates an alert when a user accesses sensitive data at unusual hours. Which type of correlation rule is being applied?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Anomaly-based correlation
UBA establishes baselines of normal user behavior and alerts on deviations, which is an anomaly-based detection method.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Threshold-based correlation
Why it's wrong here
Threshold-based triggers on counts exceeding a set number, not behavior patterns.
- ✗
Signature-based correlation
Why it's wrong here
Signature-based matches known patterns, not behavioral anomalies.
- ✓
Anomaly-based correlation
Why this is correct
UBA uses anomaly detection to identify deviations from normal behavior.
- ✗
Trend-based correlation
Why it's wrong here
Trend-based looks for patterns over time, but UBA specifically compares to baseline.
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