Once installed on your machine, WinSpy will open a security hole on your machine and will provide access to an attacker over your computer system. WinSpy may download and install additional malware to your computer. WinSpy may also display unwanted pop-up advertisements that will cause your computer to behave sluggish. WinSpy will use your computer resources and will slow down its performance. WinSpy may usually be installed without you being aware of it and may hide its presence as a low level system process. Note, that if you try to get rid of WinSpy manually it may have an ability to recreate itself every time you restart your machine.