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.
Trojan.BHO.fw is a Trojan application that stealthily embeds itself into your web browser as a BHO (Browser Helper Object). Once it has infected your computer, Trojan.BHO.fw will download and display large amounts of advertising and will redirect your browser to certain web sites. Trojan.BHO.fw is a serious threat to the security and privacy of your sensitive personal information and is recommended to be removed immediately
Technical details (How to remove Trojan.BHO.fw(pop up))