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ISC2 CC Practice Question: After a security breach, investigators find that…
After a security breach, investigators find that an attacker exploited a vulnerability in a publicly accessible application to gain access to internal databases. Which security principle would have most effectively limited the impact?
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
✓
Defense in depth
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Accountability
Why it's wrong here
Accountability ensures actions are traceable, but does not directly limit impact.
- ✗
Confidentiality
Why it's wrong here
Confidentiality protects data secrecy but does not prevent exploitation.
- ✓
Defense in depth
Why this is correct
Defense in depth would have layered controls (e.g., segmentation, IDS) to limit the attacker's lateral movement.
- ✗
Non-repudiation
Why it's wrong here
Non-repudiation provides evidence of actions, but does not prevent or contain breaches.
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
Impact
Impact is the measure of the potential damage or harm that a risk event could cause to an organization's assets, operations, or reputation.
Key term
Vulnerability
A vulnerability is a weakness in a system, network, or software that could be exploited by a threat to cause harm or unauthorized access.
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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.