As corporate vice president for Microsoft's STU (Security Technology Unit), it is Fathi's responsibility to deliver on Vista's security promise, and Rutkowska's claim—complete with live demo—that a key anti-rootkit feature can be easily defeated could be a public relations nightmare.

But Fathi was unperturbed. Almost unnoticed in the crowd, he paid close attention to Rutkowska's slides and didn't even flinch when the room erupted in applause as the demo succeeded in loading unsigned code into Vista Beta 2 kernel (x64), without requiring a reboot.
EWeek