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Q37 Single choice

A security analyst reviews a SIEM alert related to a suspicious email and wants to verify the authenticity of the message:

SPF = PASS
DKIM = FAIL
DMARC = FAIL

Which of the following did the analyst most likely discover?

A
An insider threat altered email security records to mask suspicious DNS resolution traffic.
B
The message was sent from an authorized mail server but was not signed.
C
Log normalization corrupted the data as it was brought into the central repository.
D
The email security software did not process all of the records correctly.

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