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 w

A sniffing attack involves passively capturing network traffic without modification or active relay, whereas Susan actively altered and forwarded the data.

Spoofing involves impersonating an identity such as an IP or MAC address to deceive one party, not simultaneously intercepting and modifying a live authenticated session between two endpoints.

A man-in-the-middle attack occurs when an attacker secretly positions herself between two communicating parties, intercepting and optionally altering traffic while both sides believe they are communicating directly. Susan synchronized sessions, modified the intercepted data, and forwarded it to the server, satisfying all three defining characteristics - interception, alteration, and transparent relay.

A denial of service attack aims to disrupt the availability of a service or resource, not to intercept and manipulate communications between two parties.