First Responder Actions at a Digital Crime Scene
A security analyst arrives at a suspected computer crime scene. The computer is on and a user is logged in. The analyst needs to preserve volatile data. According to first responder duties, what should the analyst do FIRST?
Quick Answer
The correct answer is to capture volatile data such as running processes and network connections. This is the first responder’s immediate priority because volatile data resides in RAM and active system memory, which is irretrievably lost the moment the computer is powered off or disconnected from the network. The order of volatility, defined in RFC 3227, dictates that data like running processes, network connections, and open ports must be collected before any static data acquisition, as they change or vanish with system state changes. On the CHFI exam, this concept tests your understanding of live forensics and the critical distinction between volatile and non-volatile evidence; a common trap is to shut down the system first or pull the plug, which destroys the very data the investigation needs. To remember the sequence, think of the mnemonic “P-R-A-M” for Processes, RAM, ARP cache, and Memory contents—capture these before touching the power button.
⚠ Common exam trap
The CHFI exam often tests the misconception that preserving the hard drive (Option A or B) is the top priority, but the trap is that volatile data is more fragile and must be captured first to avoid losing critical evidence like active network connections or malware in memory.
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
✓
Capture volatile data such as running processes and network connections
The first responder's priority is to preserve volatile data, which is lost when the system is powered off. Volatile data includes running processes, network connections, and memory contents, which must be captured before any other action. This aligns with the order of volatility (RFC 3227) and standard forensic procedures.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Immediately unplug the power cord to prevent data alteration
Why it's wrong here
Unplugging immediately would lose volatile data, which should be captured first if possible.
- ✗
Create a forensic image of the hard drive using a write blocker
Why it's wrong here
Creating a forensic image is a later step in the investigation process, after preservation of volatile data.
- ✗
Photograph the scene and document everything
Why it's wrong here
Photographing is important but capturing volatile data takes precedence as it is most fragile.
- ✓
Capture volatile data such as running processes and network connections
Why this is correct
Volatile data must be captured before powering off because it is lost when the system loses power.
Go deeper
Related to this question
Learn chapter
Overview of Computer Forensics and Investigation Process
Key term
Process Memory Dump
A process memory dump is a snapshot of all the data a specific running program has stored in RAM at a single moment, used for analyzing its behavior and contents.
Key term
Memory Acquisition
Memory acquisition is the process of capturing the contents of a computer's volatile memory to preserve data for forensic analysis and incident response.
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Same concept, more angles
2 more ways this is tested on CHFI
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A security analyst responds to a suspected data breach. The analyst documents the scene, photographs the computer, and labels the cables. Which phase of the forensic investigation process is being performed?
medium- A.Collection
- ✓ B.First response
- C.Examination
- D.Reporting
Why B: The actions described—documenting the scene, photographing the computer, and labeling cables—are part of the First Response phase. This phase occurs immediately after an incident is detected and focuses on preserving the integrity of the scene and evidence before any collection or analysis begins. In the CHFI methodology, First Response includes securing the area, creating a detailed log of the initial state, and ensuring no unauthorized changes occur.
Variation 2. A security analyst arrives at a crime scene where a computer is turned on and the screen shows a document. What is the FIRST action the analyst should take according to forensic best practices?
easy- A.Create a forensic image of the hard drive using a write blocker.
- B.Open the Task Manager to check for suspicious processes.
- C.Immediately unplug the power cord to preserve volatile data.
- ✓ D.Photograph the screen and surroundings, then proceed to document the scene.
Why D: The first priority at a live crime scene is to preserve the state of the system and its environment through documentation. Photographing the screen and surroundings captures volatile data (e.g., open documents, running processes, network connections) before any interaction alters the system. This aligns with the order of volatility and the principle of minimizing changes to the evidence.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CHFI practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CHFI exam.