A browser hijacker is a form of malware, spyware or virus that replaces the existing internet browser home page, error page, or search page with its own. These are generally used to force hits to a particular website.
Read more about Browser Hijacker: Morwill Search, Abnow, Babylon Search, Conduit Search, CoolWebSearch, MySearchCorp.com, Search-daily.com, MyStart.Incredibar Search, Profit, Removal, Rogue Security Software