A new deceptive trick was created by the scammers who develop scareware. The new malicious code called by specialists as Zeven was developed by fraudsters to automatically detect a user's browser before serving up a warning page that poses as the genuine pages generated by IE, Firefox or Chrome. Victims are warned about the putative infection in their systems to lure them into installing a fake anti-virus software package, called Win7 AV. Such warnings are generated from malicious scripts planted on compromised websites.