ZeroAccess Rootkit was discovered in November 2011 and has been causing havoc ever since.

It works by using and infected file from a package with a trusted certificate and then imbeds itself into system files such as svchost and loads the mimicked dll file instead of the original.

It is a Trojan Horse that opens a backdoor to download its own files.

This is one of the nastiest viruses around to date and can be extremely difficult to remove.

I ...