This type of Virus advertises itself as Anti-Virus software that you need to purchase online and install. It will pop up screen (see three images) to warn you that your computer is infected. When you install this software, your PC will lock you out or you will not be able to access anything on your PC.

Most common systems affected: most operating systems

Risk Level: HIGH

This is not your common virus that can easily be removed. Special removal programs are needed to remove this threat. It's highly recommended that the infected device is brought to a technician to remove it.