ISC2 CC Security Operations Practice Question
A security analyst needs to ensure that log data cannot be altered after it is written. Which of the following is the most effective method to protect log 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
✓
Implementing write-once storage for log files
Write-once storage (e.g., WORM drives) ensures data cannot be modified, deleted, or overwritten, preserving integrity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Storing logs on the same server as the application
Why it's wrong here
This makes logs vulnerable to tampering if the server is compromised.
- ✗
Using a separate log server with read-only access
Why it's wrong here
Read-only access can be bypassed if the log server is compromised.
- ✓
Implementing write-once storage for log files
Why this is correct
Write-once media prevents modification of stored data.
- ✗
Encrypting logs with a symmetric key
Why it's wrong here
Encryption protects confidentiality, not integrity against tampering.
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
Worm
A worm is a type of malicious software that can copy itself and spread to other computers over a network, often without any human action.
Key term
Integrity
Integrity is the assurance that data has not been altered or tampered with in an unauthorized way, preserving its accuracy and consistency from source to destination.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC 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 CC exam.