There were demonstrations of some nasty javascript attacks at Black Hat as well (as if the wireless driver issues wasn’t a big enough problem…) Javascript is a powerful language and can be used for many things, but in these demonstrations, it was used to track recently visited sites (by the browser victim) and identify the IP address of the victim on the internal LAN AND to alter firewall settings. From the way I read the article at the Security Fix – this is changing HARDWARE firewall settings.