Computer Hacking Forensic Investigator (CHFI) Practice Exam 2025 - Free CHFI Practice Questions and Comprehensive Study Guide

The correct sequence for collecting electronic evidence at a crime scene prioritizes capturing the most volatile data first, which is critical in preserving evidence that can be lost quickly. Volatile data, such as data in RAM, active network connections, and unsaved documents, can be lost within moments of turning off a device or when the system is powered down.

By addressing the most volatile data first, investigators can ensure that essential evidence is not lost before it can be collected and analyzed. This approach is particularly important in cases involving live systems, as various types of evidence can change, disappear, or be overwritten if a system continues to operate after the initial discovery of the incident.

In contrast, collecting evidence from the least volatile to the most volatile would risk losing valuable data that is critical to understanding the incident. Additionally, collecting evidence at random or based on convenience undermines the integrity of the evidence collection process, potentially compromising the chain of custody. Sequential collection based on the time of discovery may not take into account the volatility of the data, which can lead to missed evidence that is essential for forensic analysis. This structured approach serves to enhance the overall effectiveness and reliability of the forensic investigation.