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.
Sifr is a malware spyware, which tracks user Internet activity and transfers gathered data to a predetermined remote host. It also may show unsolicited commercial advertisements. Sifr automatically runs on every Windows startup.