A virus such as System Tool 2011 is usually created in Asia or Eastern European countries who will use the program to convince you to hand over your hard earned money in order to remove potential threats it supposedly finds, which by the way are always fake. Once the infection has installed itself onto your computer it will then start to disable all other components of your computer and then the virus will appear to be scanning your computer all the while masked as a virus removal program. Once the program has finished 'scanning' your system looking for threats it will then convince you that you need to purchase the upgraded version in order to eliminate the threats it will supposedly find. If your like some of the very unfortunate people out there that have been conned by this scam then you may notice that nothing actually appears to happen when you purchase the full version.
So many people have fallen victim to these scams because their creators have been able to disguise them so well that it is really quite difficult to distinguish between a real program and the fake and so many people haven't thought twice before handing over their credit card details to organized criminal in order to fund other criminal activities. If you happen to be browsing the Internet and suddenly everything freezes and then a program appears and looks to be scanning your computer looking for potential threats there is no doubt that is a fake antivirus. Make sure you know what programs you have on your computer so that if anything like this happens to you, you know what to do.
Thankfully Frontline Rogue Remove is a well credited program that has helped many people remove various types of fake antivirus and help them successfully gain control of their computers again with little or no damages.