A user is connecting to the Internet at an airport through an ad-hoc connection. Which of the
following is the MOST likely security threat?

A.
Man-in-the-middle

B.
Social engineering

C.
Phishing

D.
DoS

Explanation:

A man in the middle attack is one in which the attacker intercepts messages in a public key
exchange and then retransmits them, substituting his own public key for the requested one, so that
the two original parties still appear to be communicating with each other.