Question 160
A finance team is impersonated by display-name spoofing, and admins assume SPF success guarantees the message is authentic. The team believes no other action is necessary. What underlying technical or governance limitation explains this failure?
Explanation
Correct Answer
The actual failure mechanism is SPF authorization alone cannot establish that a display name represents the claimed executive. Its relevance follows from the stated tenant facts, not just a generic security recommendation. Correct it by configure Defender for Office 365 anti-phishing impersonation protection using supported identity and domain intelligence. Then verify: A test impersonation attempt triggers the intended policy response while legitimate senders remain usable.
Incorrect Answers
A single restricted sender does not justify disabling protections for every mailbox. The stated symptoms instead indicate that sPF authorization alone cannot establish that a display name represents the claimed executive.
Real malicious payloads are unnecessary and unsafe for a security awareness measurement. The stated symptoms instead indicate that sPF authorization alone cannot establish that a display name represents the claimed executive.
Restoring a password does not automatically remove every Defender or Exchange outbound sending restriction. The stated symptoms instead indicate that sPF authorization alone cannot establish that a display name represents the claimed executive.