What do NASA, the Communications Workers of America and Palminfocenter.com have in common?
Their Web sites were all defaced at different times last year by a hacker using a security weakness in Windows NT, the precursor to Microsoft's Windows 2000 server software.
Those episodes, along with the embarrassing hack of the software giant's own corporate networks, probably helped Microsoft's Web server platform win the title of most vulnerable to hackers.
This according to a survey posted this week at Attrition.org, a site that celebrates the exploits of hackers and points out the security holes of established companies.
57.98 percent of the defacements in December came on servers running Windows NT, while those using Windows 2000 were tallied at 9.96 percent. The servers running the Linux versions accounted for just more than 21.3 percent during December. Sun Microsystems's Solaris platform saw about 4.1 percent of the defacements.
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