The answer is OAuth app policies. This is the correct feature because it specifically governs OAuth consent grants, enabling security teams to automatically revoke risky permissions—such as 'read all mail' and 'send mail as user'—and block similar apps in the future based on risk level. On the SC-900 exam, this question tests your understanding of how Defender for Cloud Apps enforces automated governance actions for third-party app permissions, often appearing as a scenario where you must distinguish OAuth app policies from other features like Conditional Access or Cloud Discovery. A common trap is confusing OAuth app policies with app governance in Microsoft 365 Defender, but remember: OAuth app policies are the dedicated tool within Defender for Cloud Apps for revoking risky app permissions and blocking future consent grants. Memory tip: think "OAuth = consent control" to link the policy name directly to the action of revoking user-granted permissions.
SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. 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 uses Microsoft Defender for Cloud Apps. The security team discovers that a user has granted a third-party OAuth app with 'read all mail' and 'send mail as user' permissions. They want to automatically revoke the authorization for this risky app and block similar apps in the future. Which Defender for Cloud Apps feature should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
OAuth app policies
OAuth app policies in Microsoft Defender for Cloud Apps allow security teams to automatically revoke permissions for risky third-party OAuth apps and block future similar apps. This feature specifically governs OAuth consent grants, such as 'read all mail' and 'send mail as user', by enabling automated governance actions like revoking permissions and blocking the app based on risk level.
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.
✗
App Discovery
Why it's wrong here
App Discovery is for identifying cloud apps used in the environment, not for managing OAuth permissions.
✗
Conditional Access App Control
Why it's wrong here
Conditional Access App Control enforces session policies (e.g., block download) during a user session, not OAuth app governance.
✓
OAuth app policies
Why this is correct
Correct. OAuth app policies allow you to manage and revoke permissions for OAuth apps and set automatic governance actions.
Related concept
Read the scenario before looking for a memorised answer.
✗
Cloud Discovery
Why it's wrong here
Cloud Discovery analyzes network traffic to identify cloud apps and usage, not to manage OAuth app permissions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse App Discovery/Cloud Discovery (which identify unmanaged cloud app usage) with OAuth app policies (which specifically govern third-party app permissions and consent grants).
Detailed technical explanation
How to think about this question
OAuth app policies work by evaluating the permissions requested (e.g., Microsoft Graph scopes like Mail.Read and Mail.Send) and the app's risk score (based on factors like publisher verification and community prevalence). When a policy is triggered, Defender for Cloud Apps can automatically revoke the OAuth consent grant via the Microsoft Graph API and optionally notify the user, providing a fully automated remediation loop without manual intervention.
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 SC-900 question in full detail.
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: OAuth app policies — OAuth app policies in Microsoft Defender for Cloud Apps allow security teams to automatically revoke permissions for risky third-party OAuth apps and block future similar apps. This feature specifically governs OAuth consent grants, such as 'read all mail' and 'send mail as user', by enabling automated governance actions like revoking permissions and blocking the app based on risk level.
What should I do if I get this SC-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company uses Salesforce and Box as cloud apps. The security team discovers that a third-party OAuth app with excessive permissions was granted access to Salesforce data by a user. They want a solution that can detect such risky OAuth apps and automatically revoke their permissions based on policy. Which Microsoft security solution provides this capability?
hard
✓ A.Microsoft Defender for Cloud Apps
B.Microsoft Defender for Endpoint
C.Microsoft Defender for Office 365
D.Microsoft Sentinel
Why A: Microsoft Defender for Cloud Apps (MDCA) is a Cloud Access Security Broker (CASB) that provides visibility into third-party OAuth apps connected to cloud services like Salesforce and Box. It can detect OAuth apps with excessive permissions and automatically revoke them based on conditional access or app governance policies, making it the correct solution for this scenario.
Last reviewed: Jun 11, 2026
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