The correct answer is to immediately deactivate or delete the exposed IAM access keys. This action is the first and most critical step because it instantly revokes the keys’ validity, preventing any unauthorized user who found them in the public GitHub repository from authenticating as that IAM user. By cutting off access at the source, you stop potential data breaches, resource abuse, or privilege escalation before they can occur, aligning with the AWS security best practice of rotating credentials upon suspected compromise. On the AWS Certified Cloud Practitioner CLF-C02 exam, this scenario tests your understanding of the shared responsibility model and the principle of least privilege, often appearing as a trap where candidates might mistakenly focus on removing the GitHub commit first—but the priority is always to neutralize the credential itself. Remember the memory tip: “Keys first, commit later”—deactivate before you delete, because time is the enemy in a public exposure.
CLF-C02 Security and Compliance Practice Question
This CLF-C02 practice question tests your understanding of security and compliance. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 discovered that an IAM user's access keys were accidentally committed to a public GitHub repository. Which immediate action should they 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
✓
Immediately deactivate or delete the exposed IAM access keys
The immediate priority when IAM access keys are exposed is to revoke their validity to prevent unauthorized use. Deactivating or deleting the keys ensures that any malicious actor who obtained them from the public repository can no longer authenticate as the IAM user, stopping potential data breaches or resource abuse. This aligns with the AWS security best practice of rotating credentials upon suspected compromise.
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.
✗
Delete the GitHub repository
Why it's wrong here
Deleting the repository won't help since the keys may already be cached by bots that continuously scrape GitHub. The keys must be rotated.
✓
Immediately deactivate or delete the exposed IAM access keys
Why this is correct
Deactivating or deleting the exposed keys stops any active unauthorized use immediately. This is the first priority before investigation.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable MFA for the IAM user
Why it's wrong here
MFA protects console access, not programmatic API access via access keys. Enabling MFA does not invalidate the exposed access keys.
✗
Move the credentials to a private repository
Why it's wrong here
The credentials are already public. Moving the repository to private does not revoke the exposed credentials.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may focus on removing the public exposure (e.g., deleting the repo or moving to private) rather than understanding that the keys themselves must be invalidated, as the damage is already done once they are publicly accessible.
Detailed technical explanation
How to think about this question
IAM access keys consist of an access key ID and a secret access key used to sign AWS API requests via Signature Version 4 (SigV4). Once exposed, an attacker can use these keys to make authenticated calls to any AWS service the IAM user has permissions for, such as reading S3 buckets or launching EC2 instances. AWS CloudTrail can log actions taken with the compromised keys, but only after the fact; immediate revocation is the only way to stop ongoing abuse.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CLF-C02 question in full detail.
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Immediately deactivate or delete the exposed IAM access keys — The immediate priority when IAM access keys are exposed is to revoke their validity to prevent unauthorized use. Deactivating or deleting the keys ensures that any malicious actor who obtained them from the public repository can no longer authenticate as the IAM user, stopping potential data breaches or resource abuse. This aligns with the AWS security best practice of rotating credentials upon suspected compromise.
What should I do if I get this CLF-C02 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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