Antivirussystem2011tech.com is a browser hijacker that is inserted into a victim's Hosts file by Trojan infections. Users infected with this malicious browser will frequently encounter it when attempting to browse the internet. Antivirussystem2011tech.com works hand in hand with the rogue application called Antivirus System 2011. Together the use different tactics to coerce a victim into paying for the supposed full version of Antivirus System 2011. Never click on or purchase anything from Antivirus System 2011; the website is more harmful than helpful. Remove both Antivirus System 2011 and Antivirussystem2011tech.com from your system as soon as possible with a recognized rogueware removal tool.