hack insurance on NT vs. Unix

Just last month, Wurzler Underwriting Managers upped the price for insuring companies that use Microsoft's Windows NT server software, on the basis that the software has had a series of security problems. Wurzler, one of the earliest agencies to offer hacker insurance, began charging its clients 5 percent to 15 percent more if they use Microsoft's Windows NT instead of Unix or Linux for their Internet operations. from http://dailynews.yahoo.com/h/cn/20010607/tc/insurer_businesses_unaware_of_on...