Refer to the exhibit. What does this output indicate?

Refer to the exhibit.

Which event is occurring?

A threat actor penetrated an organization's network. Using the 5-tuple approach, which data points should the analyst use to isolate the compromised host in a grouped set of logs?

Which security principle requires more than one person is required to perform a critical task?

What should an engineer use to aid the trusted exchange of public keys between user tom0411976943 and dan1968754032?