Palo Alto Networks Certified Cybersecurity Entry-level Technician (PCCET)Security OperationsMedium
A SOC analyst is reviewing a high-severity alert from the SIEM indicating multiple failed login attempts against a critical web application, immediately followed by a successful login from an unusual geographic location using the same username. This sequence of events, correlated across different logs, suggests a credential stuffing attack. Which of the following SIEM capabilities is primarily responsible for detecting this type of complex attack scenario?
- AThreat Intelligence Feeds
- BLog Aggregation
- CSecurity Orchestration, Automation, and Response (SOAR) Integration
- DCorrelation and Anomaly Detection
Show answer & explanationAnswer & explanation
Correct answer: D. Correlation and Anomaly Detection
Correlation and anomaly detection are key SIEM capabilities that allow it to analyze multiple, disparate log entries to identify patterns and deviations from normal behavior. Detecting a credential stuffing attack, which involves correlating failed logins with a successful one from an unusual location, relies heavily on these features to link seemingly unrelated events into a coherent attack narrative.
Why the other options are wrong
- A. Threat intelligence feeds provide context or IOCs, but the correlation of internal events is a primary SIEM function.
- B. Log aggregation is collecting logs, not analyzing patterns across them.
- C. SOAR automates responses, but the detection itself is handled by the SIEM's core capabilities.
SIEM Correlation
The process by which a SIEM system links and analyzes security event data from various sources to identify patterns or sequences indicative of a security incident.
- Combines events that individually might seem benign.
- Uses predefined rules and statistical analysis for anomaly detection.
- Crucial for detecting multi-stage attacks and complex threats.
Memory trick: A SIEM is a master detective, piecing together clues to solve the case.