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350-701 Practice Question: A security engineer for a multinational…
You are a security engineer for a multinational corporation that uses a hybrid cloud environment with AWS and Azure. The company has deployed Cisco Cloudlock for SaaS security and Cisco Umbrella for DNS-layer security. Recently, the incident response team detected that an employee's credentials were compromised, and the attacker used them to access the company's Office 365 tenant. The attacker exfiltrated sensitive data by sending emails with attachments to external addresses. Cloudlock logs show that the data exfiltration occurred because the policy for 'Outbound Email with Attachments' was set to 'Allow' for all users. The attacker also used a personal Google Drive account to store stolen data, which was not detected by Cloudlock because Google Drive is not sanctioned. You need to recommend a course of action to prevent similar incidents. Which action should you take first?
⚠ Common exam trap
Cisco often tests the distinction between immediate remediation (blocking the exfiltration vector) versus long-term security improvements (MFA, password resets), and the trap here is that candidates may choose MFA or password reset because they focus on the credential compromise rather than the policy misconfiguration that allowed the data loss.
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
✓
Modify the Cloudlock policy to block outbound emails with attachments containing sensitive data for all users
The incident occurred due to a misconfigured Cloudlock policy that allowed outbound emails with attachments. By modifying the policy to block outbound emails containing sensitive data, you directly address the exfiltration vector used by the attacker. This is the most immediate and effective control to prevent recurrence of the same attack method.
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 compromised user's password and revoke all active sessions
Why it's wrong here
Important for containment but does not prevent similar exfiltration.
- ✗
Implement multi-factor authentication for all Office 365 users
Why it's wrong here
MFA helps prevent credential theft but does not stop the current exfiltration vector.
- ✓
Modify the Cloudlock policy to block outbound emails with attachments containing sensitive data for all users
Why this is correct
Directly addresses the exfiltration method used.
- ✗
Sanction Google Drive and create a Cloudlock policy to monitor it
Why it's wrong here
Monitors future use but does not prevent email exfiltration.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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