Spyware:Spyware is a type of malware that is installed surreptitiously on personal computers to collect information about users, their computer or browsing habits without their informed consent.
WinPC Defender is a rogue anti-spyware program. Once executed, WinPC Defender will generate false messages stating that your computer is infected with spyware. The makers of WinPC Defender seek to goad into purchasing their promoted full version of WinPC Defender. WinPC Defender is reported to be a clone of XP Police Antivirus, WinDefender 2009, Total Secure 2009, and IE-Security. WinPC Defender will also display notifications of imaginary security risks in its attempts to get the user to purchase the full version. WinPC Defender may be difficult to remove manually, and may continue to try to recreate itself.
Technical details (How to remove WinPc Defender(pop up))