Sirefef.FY (Win32/Sirefef.FY, Trojan Sirefef.FY) opens new tabs in browser windows and may independently launch another session. The rogue generates income for its controller as they get paid for visits caused by its redirect activities. Besides, removal of Sirefef.FY may be needed to unblock Google search features as the rogue modifies, and restricts access to, to the results specified by the search engine. Important to note the above variant is a redirecting component of its family. It always comes bundled with other elements of the trojan. Get rid of Sirefef.FY and the infections that belong to the same family, as well as other parasites as detected by free scanner available here.