Susan has attached to her company’s network. She has managed to synchronize her boss’s sessions with that of the file server. She then intercepted his traffic destined for the server, changed it the way she wanted to and then placed it on the server in his home directory. What kind of attack is Susan carrying on?

A.
A sniffing attack

B.
A spoofing attack

C.
A man in the middle attack

D.
A denial of service attack