Windows Concern System is a fake anti-virus infection that gains access to your computer and it’s important files and settings by using a number of Trojans to bypass the firewall protocols that each computer has. The Trojans will bypass the firewalls so the virus can download and install itself onto your system, this process includes deleting crucial files and replacing them with it’s own. When the virus has successfully implanted itself onto your system, you will begin to notice certain changes and differences that include various pop-ups on your desktop. After all this a legitimate looking program (which is Windows Concern System) will appear on your desktop and will appear to be scanning your system, and will always alert you saying your system is at risk. This immediately puts you in a state of panic, by which time the virus will try to get you to purchase the full version of their program to remove the infections for you. However this is completely bogus and fake.