I have seen recent cases of computers being infected with this irritating piece of c$#p. In one particular case the rogue program had the ability to change it’s name and re-install again, even after supposed removal. Another was able to prevent the user from downloading the software required to successfully remove it.
If you suspect you are unfortunate enough to have Security Shield 2012 (or one of it’s many aliases) do not panic. Disconnect the infected device from the internet, to be ultra-safe make sure all your important documents are backed up on a separate drive, usb or whatever. You should then use a different, clean device or a friends PC to download the necessary removal software.
This scareware fake security nonsense can be awkward to remove but to do so should not cost you a load of money (which is where the con comes in). For the more technically minded removal software is readily available for free on the internet or if you are unsure, just ask your local computer person nicely and they should be more than willing to help you.
There is a strong possibility that once this dungware has found it’s way onto your PC or laptop and it has been allowed to access the internet, that you will receive a phone call from some idiot scammer trying to con you out of money by offering a solution for the removal of the non-existent infections you supposedly have. If you do get one of these calls, HANG UP and where possible take a note of the telephone number which has called you. PLEASE, PLEASE, PLEASE do not give them any money.