Spyware

1. Spyware is a term used to describe a software program that is intentionally installed on a computer by to monitor what other users of the same computer are doing.

2. A term used to describe a software program that has been designed to secretly gather information about a user's activity. Spyware programs are often used to track users' habits in order to better target them with advertisements. Spyware is usually installed onto a user's machine without their knowledge when downloading free music sharing programs, visiting adult oriented web pages, and through other downloads and plug-ins on the Internet.