Question 420
An admin receives a user-reported phishing message but treats its subject line as enough evidence to quarantine similar emails. What is the BEST corrective Microsoft 365 action for this tenant?
Explanation
Correct Answer
The deciding issue is subject lines alone are weak identifiers for a phishing campaign. The action 'Analyze the email headers, sender authentication and threat verdict before scoping campaign response.' targets that issue rather than a neighboring Microsoft 365 workload. Confirm it by checking: The confirmed indicator set identifies malicious variants without matching legitimate unrelated messages.
Incorrect Answers
Restoring a password does not automatically remove every Defender or Exchange outbound sending restriction. The problem described here is that subject lines alone are weak identifiers for a phishing campaign.
Unrestricted allowlists can reduce the effectiveness of otherwise enabled mail protection. The problem described here is that subject lines alone are weak identifiers for a phishing campaign.
Historical reports do not automatically route real-time operational notifications. The problem described here is that subject lines alone are weak identifiers for a phishing campaign.