Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
Shazaa is a malware spyware that tracks user activity in the Internet. It collects information about user surfing habits and sends it to certain web servers. Shazaa has the ability to update itself via the Internet. The spyware works as an undesirable browser add-on. It can get into the computer from unsafe web sites.