Symantec Security Response Weblog: 64-bit Driver Signing on Windows Vista  ‘Computer Says No’

なんかrootkitライクの動作をするドライバーの署名をもらったけど1週間程度で止められたって内容かな?

The authors had gone through the process of obtaining a signing key for both the 32-bit and 64-bit versions of Windows Vista for their kernel driver. The result was that it could be used to load arbitrary unsigned driver code including rootkits into the Vista kernel.