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.
SP2Update is an adware spyware that monitors user activity in the Internet, logs addresses of visited web sites and records entered keywords. It sends gathered data to a predetermined web server. Collected information is used to receive and show relevant commercial advertisements. SP2Update can get into the computer along with some ad-supported software. The spyware runs on every Windows startup.
Technical details (How to remove SP2Update(pop up))