See:
http://www.zdnet.com/intweek/stories/news/0,4164,2766275,00.html
Offered in counter-point to the M$ claim that was made in "That Word Document." The greater security that M$ claims with their OS is not making much of an impression in the insurance industry. Insurance against the damages caused by hacking bears a 5 to 15% higher premium for Windows NT.
George.