You think your computer is infected with something, because for no reason your homepage changed to Smartinf.ru and your default search engine changed to it as well. Are you looking for an effective removal guide for removing Smartinf.ru effectively? This post will do you a favor.
Smartinf.ru looks completely legitimate, however, in reality; Smartinf.ru is a pesky browser hijacker which may change the settings of web browsers without seeking for any permission from users. Smartinf.ru is able to take over your browsers and sets Smartinf.ru as your homepage and default search engine.