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Difficulty: MediumLog Analysis and SIEM Management

During the deployment of a new Security Information and Event Management (SIEM) system, a security engineer is configuring the automated pipeline for handling enterprise security events. Arrange the stages of the SIEM data processing pipeline in the correct chronological order from initial log intake to final analyst notification.

  1. 1Log Collection and Ingestion
  2. 2Parsing and Normalization
  3. 3Event Correlation
  4. 4Alert Generation and Dispatch

Answer

The correct sequence of the SIEM log processing pipeline is: Log Collection and Ingestion -> Parsing and Normalization -> Event Correlation -> Alert Generation and Dispatch.
The correct sequence reflects the standard data lifecycle within a SIEM: raw log streams are ingested from hosts and networks, normalized into standard field formats, evaluated by correlation logic to detect multi-event attack patterns, and finally dispatched as actionable alerts to security analysts.

Step-by-Step Solution

1
Identify the initial data intake phase
Log Collection and Ingestion occurs first as raw data must be gathered from sources before processing.
Without raw log intake, no downstream parsing or analysis can occur.
2
Identify the data formatting phase
Parsing and Normalization occurs second to standardize field names and structures across disparate sources.
Correlation rules require standardized fields (like source IP or username) to evaluate events across different log sources.
3
Identify the detection and rule evaluation phase
Event Correlation occurs third as normalized data is evaluated against threat logic and correlation rules.
SIEM rules analyze relationships between parsed events to identify multi-source security incidents.
4
Identify the notification phase
Alert Generation and Dispatch occurs last when correlation rules trigger security alerts for SOC analysts.
Alerting is the output produced after an incident scenario is identified by correlation logic.

Key Concept

SIEM Log Processing Pipeline
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Topics

Log Analysis and SIEM Management

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