bill - 1:28 am on Apr 18, 2008 (gmt 0)

Microsoft Issues One-Year Vulnerability Report for Windows Vista [windowsitpro.com] Microsoft this week issued a report analyzing the vulnerability disclosures and security updates for Windows Vista's first year on the market, comparing this information to similar first-year data for its predecessor, Windows XP, and contemporary competition such as Red Hat Enterprise Linux, Ubuntu Linux, and Apple Mac OS X. Not surprisingly, given the deep security improvements that the company made to Vista, Microsoft's latest OS came out well ahead of the other systems. ... Windows Vista had 36 fixed vulnerabilities. This compared to 65 for Windows XP, 116 for Mac OS X 10.4, 224 for Ubuntu 6.06 LTS, and a whopping 360 for Red Hat Enterprise Linux 4.

As the article points out, this doesn't measure overall security. It just shows that there are fewer vulnerabilities affecting Vista over the period studied.