Order of Volatility: First Responder Data Collection
During the initial response to a suspected data exfiltration, which THREE pieces of volatile data should be collected first? (Choose three.)
Quick Answer
The answer is contents of system memory (RAM), current network connections, and running processes. These three pieces of volatile data must be collected first because they represent the most ephemeral evidence on a system, governed by the order of volatility principle in first responder collection. RAM holds active processes, encryption keys, and malware that vanish instantly upon power loss, while network connections and running processes reveal live exfiltration channels and malicious activity that cease the moment the system is disconnected or shut down. On the Computer Hacking Forensic Investigator CHFI exam, this concept tests your understanding of the Locard’s Exchange Principle applied to digital forensics, often appearing as a scenario-based multiple-choice question where a common trap is to prioritize hard drive imaging over RAM capture. Remember the mnemonic “RCN” for RAM, Connections, Network processes—collect these before pulling the plug.
⚠ Common exam trap
EC-Council often tests the Order of Volatility principle, and the trap here is that candidates mistakenly prioritize persistent data like registry hives or disk images over transient evidence that disappears immediately upon shutdown.
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
✓
Current network connections.
Current network connections (A) are volatile because they show active communication channels that could indicate data exfiltration in progress. If the system is shut down or disconnected, this evidence is lost immediately, making it a top priority for collection during initial response.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Current network connections.
Why this is correct
Network connections are transient and may disappear.
- ✓
List of running processes.
Why this is correct
Processes can start/stop quickly; must be captured early.
- ✓
Contents of system memory (RAM).
Why this is correct
Memory contains the most volatile data including encryption keys and active malware.
- ✗
Windows registry hives.
Why it's wrong here
Registry is stored on disk and is less volatile.
- ✗
Forensic image of the hard drive.
Why it's wrong here
Disk is non-volatile and can be collected later.
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Same concept, more angles
1 more way 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. You are responding to a suspected malware infection on a Windows 10 system. The system is still running. Which of the following should you collect FIRST?
medium- ✓ A.Acquire a memory dump using a tool like WinPmem.
- B.Collect the Windows Event Logs.
- C.Export the contents of the Windows Registry.
- D.Create a forensic image of the hard drive.
Why A: When a system is still running and suspected of malware infection, the first priority is to capture volatile data, which includes the contents of RAM. WinPmem is a tool designed to acquire a memory dump from a live Windows system, preserving critical evidence such as running processes, network connections, and injected code that would be lost on shutdown. This follows the order of volatility (RFC 3227), which mandates collecting memory before any non-volatile data like logs, registry, or disk images.
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.