CCSP Log integrity verification Practice Question
A security analyst is investigating a potential breach and needs to verify the integrity of audit logs stored in cloud storage. Which feature should the analyst rely on to confirm that logs have not been tampered with?
⚠ Common exam trap
CCSP often tests the difference between encryption (confidentiality), immutability (prevention of change), and integrity validation (detection of change) — candidates pick encryption or immutability when the question specifically asks to 'verify' or 'confirm' integrity.
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
✓
Log file integrity validation
Log file integrity validation is the cloud-native feature (e.g., AWS CloudTrail log file integrity validation) that uses cryptographic hashing and digital signatures to prove that log files have not been altered or deleted after delivery. It produces a digest file for each log delivery containing SHA-256 hashes and a signature, allowing the analyst to verify tamper-evidence. This directly answers the requirement to 'confirm logs have not been tampered with.'
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Server-side encryption of logs
Why it's wrong here
Server-side encryption protects logs at rest from unauthorised disclosure, but anyone holding the key can still alter ciphertext contents undetected. It is the right control for confidentiality and compliance. Integrity verification needs hashing or digital signatures, which reveal any modification to the log data.
- ✓
Log file integrity validation
Why this is correct
Log file integrity validation produces cryptographic hashes that let the analyst confirm stored audit logs have not been altered or deleted. It directly satisfies the tamper-detection requirement, unlike versioning or retention locks, which prevent deletion but do not prove integrity.
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Anomaly detection on logs
Why it's wrong here
Anomaly detection flags unusual activity patterns, which supports breach detection rather than proving stored logs remain unmodified. It suits threat hunting and behavioural baselining. Confirming integrity requires cryptographic verification, such as comparing hashes or validating digital signatures over the log entries.
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Immutable storage for logs
Why it's wrong here
Immutability prevents modification or deletion for a retention period, but it does not itself prove logs are unaltered; an attacker with write access before the policy applies could still tamper. It is chosen for regulatory retention and ransomware protection. Hash-based verification or signed log digests confirms integrity.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official ISC2 exam blueprint
This CCSP 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 CCSP exam.