Joe, an employee, asks a coworker how long ago Ann started working at the help desk. The coworker expresses surprise since nobody named Ann works at the help desk. Joe mentions that Ann called several people in the customer service department to help reset their passwords over the phone due to unspecified "server issues".
Which of the following has occurred?
A. Social engineering
B. Whaling
C. Watering hole attack
D. Password cracking