The correct answer is to conduct a post-incident review. This step, often called a lessons learned meeting, is essential because it systematically analyzes what happened during the incident, what worked well, and what failed, directly addressing the search intent of "post-incident review lessons learned." By documenting these findings, the team can update policies, improve detection tools, and refine response procedures to prevent recurrence and strengthen future handling. On the ISC2 Certified in Cybersecurity CC exam, this concept tests your understanding of the final phase in the incident response lifecycle—after containment and eradication—and is a common trap where candidates mistakenly choose "restoring backups" or "notifying law enforcement" instead. Remember the memory tip: after you stop the fire, you review the drill—PIR (Post-Incident Review) ensures you don’t get burned the same way twice.
ISC2 CC Business Continuity, DR & Incident Response Practice Question
This CC practice question tests your understanding of business continuity, dr & incident response. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
After a security incident has been contained and eradicated, which of the following should be done to improve future incident response?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Conduct a post-incident review
A post-incident review (lessons learned) helps identify improvements to prevent recurrence and enhance response.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Conduct a post-incident review
Why this is correct
The review captures lessons learned and updates procedures.
Related concept
Read the scenario before looking for a memorised answer.
✗
Reinstall the operating system
Why it's wrong here
Reinstallation is part of eradication, not a post-incident improvement step.
✗
Disable the affected user accounts
Why it's wrong here
Account disablement is part of containment; it does not improve future response.
✗
Delete all incident-related logs
Why it's wrong here
Logs should be preserved for forensic analysis and legal purposes.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CC question in full detail.
Identify which CC exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Business Continuity, DR & Incident Response — This question tests Business Continuity, DR & Incident Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Conduct a post-incident review — A post-incident review (lessons learned) helps identify improvements to prevent recurrence and enhance response.
What should I do if I get this CC question wrong?
Identify which CC exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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