An attacker engages in pretexting behavior, assuming some sort of trusted
						role, and contacting the targeted individual or organization via phone to
						solicit information from target persons, or manipulate the target into
						performing an action that serves the attacker's interests. This is the most
						common social engineering attack. Some of the most commonly effective
						approaches are to impersonate a fellow employee, impersonate a computer
						technician or to target help desk personnel.