This CCSP practice question tests your understanding of cloud security operations. 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 company experiences a security breach in its cloud environment, and the security team needs to preserve evidence for legal proceedings. Which of the following is the MOST important step to take first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
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
✓
Isolate the compromised systems from the network to prevent lateral movement.
Option B is correct because the immediate priority in a cloud security incident is to contain the breach and prevent lateral movement, which preserves the integrity of the evidence by stopping further compromise. Isolating compromised systems (e.g., via network security groups or virtual network segmentation) ensures that volatile data, such as memory contents and active connections, is not altered by ongoing attacker activity. This step aligns with the NIST SP 800-61 incident response framework, which emphasizes containment before evidence collection.
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.
✗
Disable all logging to prevent the attacker from seeing detection efforts.
Why it's wrong here
Disabling logging destroys evidence and is not best practice.
✓
Isolate the compromised systems from the network to prevent lateral movement.
Why this is correct
Isolating systems is the first priority to stop the attack and preserve evidence.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Notify all affected customers of the breach.
Why it's wrong here
Notification is a later step after containment and evidence preservation.
✗
Contact the legal department to obtain a warrant before any action.
Why it's wrong here
Legal advice is important but immediate containment takes precedence to prevent further damage.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the misconception that preserving evidence means immediately collecting logs or notifying stakeholders, when in fact the first step is to contain the incident to prevent evidence from being altered or destroyed by ongoing attacker activity.
Detailed technical explanation
How to think about this question
In cloud environments, isolation can be achieved by applying network ACLs or security group rules that deny all inbound and outbound traffic to the compromised instance, or by moving the instance to a quarantine VPC with no egress routes. This preserves the instance's disk volumes and memory for forensic imaging while preventing the attacker from using the compromised system as a pivot to other resources. Under the hood, cloud providers like AWS offer 'host-level' isolation via security groups that are stateful, meaning they track connection state and can block new connections without disrupting existing ones if configured carefully.
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 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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Cloud Security Operations — This question tests Cloud Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Isolate the compromised systems from the network to prevent lateral movement. — Option B is correct because the immediate priority in a cloud security incident is to contain the breach and prevent lateral movement, which preserves the integrity of the evidence by stopping further compromise. Isolating compromised systems (e.g., via network security groups or virtual network segmentation) ensures that volatile data, such as memory contents and active connections, is not altered by ongoing attacker activity. This step aligns with the NIST SP 800-61 incident response framework, which emphasizes containment before evidence collection.
What should I do if I get this CCSP 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: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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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