An intruder attempted malicious activity and exchanged emails with a user and received corporate information, including email distribution lists. The intruder asked the user to engage with a link in an email. When the fink launched, it infected machines and the intruder was able to access the corporate network.
Which testing method did the intruder use?

Refer to the exhibit.

In which Linux log file is this output found?

Refer to the exhibit. Which kind of attack method is depicted in this string?

How does certificate authority impact a security system?

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?