Question 1,355 of 1,038
SC-200 Respond to security incidents Practice Question
You are responding to an incident where a user's credentials were used to access a federated SaaS application from an IP address associated with a known threat actor. The user's account is not disabled. Which action is most effective to prevent further unauthorized access?
⚠ Common exam trap
A common mix-up: candidates choose to block the IP (Option B or D) because it seems immediate and technical, but they overlook that the attacker can easily change IPs and that the core issue is credential compromise, not network-level access.
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
✓
Reset the user's password and revoke active sessions
Resetting the user's password and revoking active sessions immediately invalidates the compromised credentials and terminates any existing authenticated sessions, including the session used by the threat actor. This directly addresses the root cause—credential compromise—without unnecessarily disrupting the user's account permanently. In a federated SaaS scenario, password reset combined with session revocation ensures the threat actor cannot re-authenticate even if they possess the previous password hash or tokens.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Reset the user's password and revoke active sessions
Why this is correct
This invalidates the compromised credentials and terminates current sessions.
- ✗
Create a Conditional Access policy to block the IP
Why it's wrong here
Policy takes time to propagate; immediate action needed.
- ✗
Disable the user's account
Why it's wrong here
Effective but more disruptive; resetting is preferred.
- ✗
Block the source IP address on the firewall
Why it's wrong here
IP blocking is easily bypassed.
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Last reviewed: Jul 4, 2026
This SC-200 practice question is part of Courseiva's free Microsoft 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 SC-200 exam.
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