QuestionQ303

Procedures and Methodology

After a large-scale cyberattack at a financial institution in Chicago, Illinois, investigators are inundated with repeated alerts and duplicate log entries from several monitoring platforms. Before attempting correlation, the team performs a step intended to reduce noise and improve analytical efficiency. What action does this step represent?

  • A Format data from different log types into a single log format
  • B Compress data, delete repeated entries, or filter similar events
  • C Encrypt and authenticate data during collection
  • D Gather logs from multiple sources into a centralized system
Explanation

Data reduction decreases the volume of events requiring analysis by compressing data, eliminating duplicate entries, and filtering similar events. This reduces noise and makes subsequent correlation more efficient.

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