Case 2 Claire Is Worried About Computer Viruses Spreading

Multiple Choice

Case 2 Claire is worried about computer viruses spreading. Also, with the proliferation of network traffic and e-mail, worms have become a major concern in the computing community. She is interested in tracking the sources of the viruses and worms to stop the threat. Claire has discovered that ____ are notorious for using backdoors to steal passwords and credit card numbers.

A) Trojan horses
B) file viruses
C) retro viruses
D) worms