iStartsurf.com goes under the category of browser hijackers. The programs of such sort secretly attach to the browsers, modify some their settings such as start page and default search engine. It is done to reach the main purpose of this browser attacker – to promote the sponsored web sites and make money on these illegal activities. They also display a bunch of unstoppable pop-ups advertisements and automatically redirect users to the promoted web sites thus artificially increasing their page rank. Furthermore such applications may record individual info like search queries, recurrent keywords, the most visited sites etc. and send all of the these details to some remote server which behaves as a command and control base station and may this data for their marketing needs. To sum up iStartsurf.com and similar samples are recommended to be removed at once upon detection. Go on reading and you will find out other important information concerning this annoying browser infection.