The correct response is to delete the CloudHSM backup from the backup service, then rotate all keys that were stored in the HSM. This is because CloudHSM backups contain the full cryptographic material of the HSM cluster, including all keys and certificates; if a former employee has already copied that material, deleting the backup prevents them from restoring the HSM’s contents to a new cluster and using the keys. On the AWS Certified Security Specialty SCS-C02 exam, this scenario tests your understanding that CloudHSM backups are independent of the cluster itself—deleting the cluster alone does not remove the backup, and changing HSM credentials or using KMS does not invalidate already-exfiltrated key material. A common trap is assuming that deleting the HSM cluster is sufficient, but the backup must be explicitly deleted. Memory tip: “Backup first, then rotate—don’t just delete the cluster, kill the copy.”
SCS-C02 Data Protection Practice Question
This SCS-C02 practice question tests your understanding of data protection. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 uses AWS CloudHSM to generate and store encryption keys for a custom application. The application runs on Amazon EC2 instances and uses the PKCS#11 interface to interact with the HSM. The security team recently discovered that a former employee may have obtained a copy of the cryptographic materials from the HSM. What should the security team do to minimize the impact?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Delete the CloudHSM backup from the backup service. Then rotate all keys that were stored in the HSM.
Option C is correct because CloudHSM backup contains the cryptographic material; deleting the backup ensures the former employee cannot restore the HSM's contents. Option A is wrong because deleting the HSM cluster does not delete the backup automatically. Option B is wrong because changing the HSM credentials does not invalidate the copied material. Option D is wrong because KMS cannot revoke keys stored in CloudHSM.
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.
✗
Use AWS KMS to create a new key and re-encrypt all data. Then revoke the old key.
Why it's wrong here
KMS cannot revoke keys stored in CloudHSM; the application uses CloudHSM directly.
✓
Delete the CloudHSM backup from the backup service. Then rotate all keys that were stored in the HSM.
Why this is correct
Deleting the backup prevents restoration of the compromised material; rotating keys invalidates the copied material.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the HSM administrator password and the crypto user passwords.
Why it's wrong here
Changing passwords does not invalidate the copied cryptographic material.
✗
Delete the HSM cluster and create a new one. Restore the backup from a known good time.
Why it's wrong here
Deleting the cluster does not delete backups; the former employee could still restore the backup.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which SCS-C02 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.
Data Protection — This question tests Data Protection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Delete the CloudHSM backup from the backup service. Then rotate all keys that were stored in the HSM. — Option C is correct because CloudHSM backup contains the cryptographic material; deleting the backup ensures the former employee cannot restore the HSM's contents. Option A is wrong because deleting the HSM cluster does not delete the backup automatically. Option B is wrong because changing the HSM credentials does not invalidate the copied material. Option D is wrong because KMS cannot revoke keys stored in CloudHSM.
What should I do if I get this SCS-C02 question wrong?
Identify which SCS-C02 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.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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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