WinScan is categorized as a rogue security program like Windows Scan, Disk Helper, etc. It is created to display some fake system errors and then misguide users to purchase its license to solve the non-existent system problems. WinScan is installed without user’s permission with help of trojans. It may also be distributed via fraudulent websites and its behavior is unpredictable. If you try to remove WinScan as a regular application, you are likely to face a rootkit defense of the adware that prevents relevant tools from deleting its components. You need to remove WinScan as quickly as possible upon detection cause they are bogus applications.