Rogue antivirus applications have been a serious threat to users for some time now. Attackers have learned to copy exactly the GUI and virtually every feature of authentic AV programs. The look and feel of the fake antivirus is very close to that of the legitimate AVG product. Fake antivirus attacks have shown up on a number of legitimate Web sites in recent months, including the New York Times home page, making them look all the more authentic. It s also very difficult for the average Internet user to tell the difference between an attack like this and the reminders from real antivirus programs.
Source: https://threatpost.com/scareware-nearly-exact-copies-real-av-now-121709/73270/