A network engineer discovers that a foreign government hacked one of the defense contractors in their home country and stole intellectual property. What is the threat agent in this situation?

Refer to the exhibit.

An engineer is analyzing this Cuckoo Sandbox report for a PDF file that has been downloaded from an email. What is the state of this file?

An analyst received an alert on their desktop computer showing that an attack was successful on the host.
After investigating, the analyst discovered that no mitigation action occurred during the attack. What is the reason for this discrepancy?

Which regex matches only on all lowercase letters?

Refer to the exhibit.

Which technology generates this log?