Turnstiles, double entry doors and security guards are all prevention measures for which of the
following types of social engineering?

A.
Piggybacking

B.
Looking through a co-worker’s trash to retrieve information

C.
Impersonation

D.
Looking over a co-workersshould’er to retrieve information

Explanation:

Piggybacking is an espionage tactic commonly used in the movies. The hero or the villain hides by
a secure entrance, and waits for an unknowing authorized user to enter. When the authorized user
enters, they use stealth to sneak behind them and gain access without the authorized user even
knowing. Other forms of piggybacking take advantage of human altruism. An unauthorized person
will put on a disguise and carry a heavy box to the door, where the authorized user will try to do
the right thing, and prop the door open for them.