If you see a.karmashack.club alerts in your browser, then your entire PC is infected by adware. By the way, these particular troubles may happen in Mac OSX and Windows computers. Hence, these pop-ups happen with Safari, Internet Explorer, Google Chrome, Opera and Mozilla Firefox. The purpose of all such alerts is to trick you into wasting your money for nothing. This is why the contents of a.karmashack.club pop-ups are quite scary.