CompTIA Security+ Question F-33

One month after a software developer was terminated the helpdesk started receiving calls that several employees’ computers were being infected with malware. Upon further research, it was determined that these employees had downloaded a shopping toolbar. It was this toolbar that downloaded and installed the errant code. Which of the following attacks has taken place?

A. Logic bomb
B. Cross-site scripting
C. SQL injection
D. Malicious add-on

Answer: A