A computer user, Joe, was surfing for information on a news site when he reported a screen
flicker and then a pop-up appeared on his screen stating the computer was infected with a
virus. Joe noticed the title of the pop-up was not from his installed antivirus. Which of the
following BEST describes this infection?

A.
Worm

B.
Spyware

C.
Social engineering

D.
Malware