AVscanner.net

AVscanner.net is a fake security website that urge you to buy a full version of a fake Security tool.

Fake antiviruses are characterized by bogus system scans, constant popups and browser hijacking, which may explain why you may be constantly redirected to therogue http://AVscanner.net website and you find this alert in your computer screen: windows security has found critical process activity on your system and will perform fast scan of system files

Do not even think about paying for the license key that the AVscanner.net promotes to you. The fake virus and spyware protection software that it offers will not get rid of viruses, trojans and other malwares in your computer.
Consider using a safer browser such as firefox. You may want to read this article on how to get rid of fake av virus malwares.