Windows Vista has already attracted the attention of the virus writers and the first one takes advantage of the new command shell.

The viruses were published last month in a virus-writing tutorial written for an underground hacker group calling itself the Ready Ranger Liberation Front, and take advantage of security vulnerabilities in the new command shell. Unlike the traditional Windows graphical user interface, which relies heavily on the mouse for navigation, command shells allow users to use powerful text-based commands, much like Windows' predecessor, DOS.