A sales manager at your company is complaining about slow performance on his computer. When you thoroughly investigate the issue, you find spyware on his computer. He insists that the only thing he has downloaded recently was a freeware stock trading application. What would best explain this situation?

A Trojan attaches a malicious program to a legitimate program. When the user downloads and installs the legitimate program, they get the malware. A logic bomb is malware that does its misdeeds when some condition is met. A rootkit is malware that gets administrative, or root, access. A macro virus is a virus that is embedded in a document as a macro.