Joe, a User, Reports to the Help Desk That He

Multiple Choice

Joe, a user, reports to the help desk that he can no longer access any documents on his PC. He states that he saw a window appear on the screen earlier, but he closed it without reading it. Upon investigation, the technician sees high disk activity on Joe's PC. Which of the following types of malware is MOST likely indicated by these findings?

A) Keylogger
B) Trojan
C) Rootkit
D) Crypto-malware