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ISC2 CC Practice Question: A company's security policy states that all…
A company's security policy states that all sensitive data must be encrypted both at rest and in transit. Which threat model does this control primarily address?
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
✓
Unauthorized disclosure
Encryption at rest and in transit primarily protects confidentiality by preventing unauthorized access to data. Option B (Unauthorized disclosure) is correct. Option A (Data tampering) relates to integrity, not confidentiality. Option C (Denial of service) relates to availability, which encryption does not directly address. Option D (Repudiation) concerns non-repudiation, which encryption alone does not ensure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Data tampering
Why it's wrong here
While encryption can hinder tampering, it is not the primary control; integrity checks like hashing are more direct.
- ✓
Unauthorized disclosure
Why this is correct
Encryption prevents unauthorized parties from reading the data, thus preventing disclosure.
- ✗
Denial of service
Why it's wrong here
Denial of service attacks target availability, not confidentiality.
- ✗
Repudiation
Why it's wrong here
Repudiation is addressed by non-repudiation mechanisms like digital signatures.
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
Policy
A policy is a set of rules or guidelines that defines how an organization manages, secures, and operates its IT systems and services.
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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Same concept, more angles
1 more way this is tested on CC
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 company uses encryption to protect data at rest and in transit. This primarily addresses which aspect of the CIA triad?
easy- A.Integrity
- B.Authentication
- ✓ C.Confidentiality
- D.Availability
Why C: Encryption prevents unauthorized access to data, thereby maintaining confidentiality. Option A (Integrity) is wrong because while encryption can support integrity through hashing, its primary role is confidentiality. Option B (Authentication) is wrong because encryption alone does not verify identity; authentication requires separate mechanisms like digital signatures. Option D (Availability) is wrong because encryption does not ensure data is accessible; it protects data from unauthorized access.
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.