At the outside break area, an employee, Ann, asked another employee to let her into the building
because her badge is missing. Which of the following does this describe?

A.
Shoulder surfing

B.
Tailgating

C.
Whaling

D.
Impersonation

Explanation:
Although Ann is an employee and therefore authorized to enter the building, she does not have
her badge and therefore strictly she should not be allowed to enter the building.
Just as a driver can tailgate another driver’s car by following too closely, in the security sense,
tailgating means to compromise physical security by following somebody through a door meant to
keep out intruders. Tailgating is actually a form of social engineering, whereby someone who is
not authorized to enter a particular area does so by following closely behind someone who is
authorized.