Well in their defense it does sound deadly. If the virus writer was hell bent on infecting your machine he might kill you in the struggle after forcing himself into your home/office and then attempthing to get on your computer. It's quite the threat. I'm not sure though how useful a firewall is at that point regardless of who makes it, unless that firewall was made by S&W, Glock, Mossberg, etc. and happened to be fully loaded and in your hands at the time of the invasion.