SSCP Incident Response and Recovery Practice Question
What is the primary purpose of establishing a chain of custody for digital evidence?
⚠ Common exam trap
Watch out — candidates often confuse chain of custody with data preservation techniques like encryption or compression, but the exam specifically tests that its core purpose is to ensure integrity and provide an unbroken audit trail of handling, not to secure or reduce the data.
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
✓
To maintain evidence integrity and track handling
The primary purpose of establishing a chain of custody for digital evidence is to maintain evidence integrity and track every person who handled the evidence from collection through presentation in court. This process ensures that the evidence has not been tampered with, altered, or corrupted, which is critical for admissibility under legal standards such as the Federal Rules of Evidence (FRE) Rule 901. By documenting each transfer with timestamps, signatures, and hash values (e.g., MD5 or SHA-256), the chain of custody provides a verifiable audit trail that supports the evidence's authenticity and reliability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To reduce the size of evidence for storage
Why it's wrong here
Chain of custody records transfers and access to preserve admissibility, not compress data. It is tempting because storage volume is a real forensic concern, but that is addressed by imaging and deduplication tools, whereas custody documentation exists to prove evidence remained unaltered.
- ✗
To encrypt evidence for secure transmission
Why it's wrong here
Chain of custody tracks handling and transfers to prove integrity, not to encrypt data. It is tempting because secure transmission of evidence matters, but encryption is a separate control applied during transport or at rest; custody forms document who possessed the evidence, not its cryptographic protection.
- ✓
To maintain evidence integrity and track handling
Why this is correct
Chain of custody documents who collected, accessed and transferred each artefact, with timestamps and signatures. This unbroken audit trail preserves evidence integrity and admissibility, proving the data was not altered or substituted between seizure and presentation, which satisfies the requirement to track handling throughout the investigation.
- ✗
To prioritize which evidence to analyze first
Why it's wrong here
Chain of custody documents who handled evidence, when, and how, preserving admissibility; it does not rank or sequence analysis. It is tempting because prioritisation matters in investigations, but that is triage, a separate process driven by case relevance, not the custody log's integrity purpose.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SSCP practice question is part of Courseiva's free ISC2 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 SSCP exam.