CS0-003 Incident Response and Management Practice Question
This CS0-003 practice question tests your understanding of incident response and management. 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.
A security analyst suspects an insider threat based on unusual data access patterns by an employee. According to best practices, which TWO actions should the analyst take FIRST?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Restrict the employee's access to sensitive data.
Restricting the employee's access to sensitive data (A) is a correct first action because it immediately reduces the risk of further data exfiltration or damage while preserving the ability to investigate. Collecting additional evidence without alerting the employee (D) is also correct because it allows the analyst to build a forensic case covertly, preventing the insider from destroying evidence or altering behavior. Both actions align with the incident response principle of containment before eradication and the need to avoid tipping off a potential adversary.
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.
✓
Restrict the employee's access to sensitive data.
Why this is correct
Limiting access reduces risk while investigation continues.
Clue confirmation
The clue words "best", "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Suspend the employee's accounts outright.
Why it's wrong here
Suspension may be too harsh without confirmation; could tip off the employee.
✗
Immediately notify law enforcement.
Why it's wrong here
Law enforcement notification is premature; incident not yet confirmed.
✓
Collect additional evidence without alerting the employee.
Why this is correct
Preserving evidence is critical; not tipping off the subject helps investigation.
Clue confirmation
The clue words "best", "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Confront the employee about the behavior.
Why it's wrong here
Confrontation may lead to evidence destruction or escalation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the distinction between 'immediate containment' and 'overreaction' — the trap here is that candidates confuse 'suspending accounts' (a disruptive, all-or-nothing action) with 'restricting access' (a precise, reversible control), leading them to choose B instead of A.
Detailed technical explanation
How to think about this question
In insider threat investigations, the principle of 'least privilege' is applied dynamically: access controls (e.g., DACLs in Windows or IAM policies in AWS) should be modified to remove only the specific sensitive data permissions, not the entire account. Covert evidence collection often involves enabling enhanced logging (e.g., Windows Event ID 4663 for object access or Linux auditd rules) and using network monitoring tools (e.g., Zeek or Wireshark) to capture lateral movement without the user's knowledge. A real-world scenario might involve an employee accessing HR databases outside normal hours; the analyst would first restrict that specific database access and then review SIEM logs for related anomalies before escalating.
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.
TExam Day Tips
→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 developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CS0-003 question in full detail.
Incident Response and Management — This question tests Incident Response and Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Restrict the employee's access to sensitive data. — Restricting the employee's access to sensitive data (A) is a correct first action because it immediately reduces the risk of further data exfiltration or damage while preserving the ability to investigate. Collecting additional evidence without alerting the employee (D) is also correct because it allows the analyst to build a forensic case covertly, preventing the insider from destroying evidence or altering behavior. Both actions align with the incident response principle of containment before eradication and the need to avoid tipping off a potential adversary.
What should I do if I get this CS0-003 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best", "first". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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