KaZaA is a popular peer-to-peer file sharing application. The makers of KaZaA financially support their software development efforts by installing an array of spyware applications when users install KaZaA. Spyware and AdWare applications that KaZaA installs include Cydoor\\, GAIN\\, Gator\\, eUniverse\\, MyBar\\, SaveNow\\, and WhenU.
Foistware is a term used to describe software downloaded to a computer without the owner's knowledge, which puts hidden components on a system, and attempts to bait the unsuspecting into purchasing another software remedy.