Spyware

Loaded on to your computer unbeknownst to you, spyware is a type of program that watches what users do and forwards information to someone else. It is most often installed when you download free software on the Internet. Unfortunately hackers discovered this to be an effective means of sending sensitive information over the Internet. Moreover, they discovered that many free applications that use spyware for marketing purposes could be found on your machine, and attackers often use this existing spyware for their malicious means.