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CCSP Practice Question: A multinational corporation uses a hybrid cloud…
A multinational corporation uses a hybrid cloud model with on-premises data centers and the AWS cloud. They have implemented a Cloud Access Security Broker (CASB) to enforce security policies. Recently, the security team noticed that users are accessing cloud applications from unusual geographic locations and downloading large volumes of data. The CASB logs show that the users authenticated using single sign-on (SSO) with valid credentials. The company has not enabled multi-factor authentication (MFA) for all users due to a previous pushback from the user community. The security team suspects a credential theft incident. What is the BEST course of action to mitigate the risk and respond to the potential incident?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Revoke the suspicious sessions and require all users to re-authenticate with MFA before granting access to cloud applications.
Immediately revoking the suspicious sessions stops the potential attack, and requiring MFA re-authentication adds an essential layer of security to prevent further unauthorized access. Option B is insufficient because password changes alone do not address the lack of MFA, leaving accounts vulnerable to future credential theft. Option C is too disruptive and assumes all users are compromised, which is not indicated by the evidence. Option D would severely disrupt business operations and does not enforce stronger authentication; it only bypasses SSO without addressing the root cause.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Revoke the suspicious sessions and require all users to re-authenticate with MFA before granting access to cloud applications.
Why this is correct
This immediately stops the ongoing threat and enforces a stronger authentication method for future access.
- ✗
Ask the affected users to change their passwords and monitor their accounts for further suspicious activity.
Why it's wrong here
Password reset alone is insufficient because the attacker may have already established persistence or used the credentials elsewhere.
- ✗
Lock all user accounts and require the IT team to manually verify each user's identity before unlocking.
Why it's wrong here
Locking all accounts is too extreme and will severely impact business operations; it is not proportionate to the evidence.
- ✗
Disable SSO immediately and require users to authenticate directly with the cloud applications.
Why it's wrong here
Disabling SSO is a drastic measure that will cause user friction and may not prevent the attacker from using stolen credentials directly.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CCSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CCSP exam.