Turns out that the vast majority of virus attacks are against badly-written third-party software, rather than Windows itself. So claims Microsoft, anyway, in the graph to the right. In XP, 58% of attacks target third party software, and in Vista, 94% target third-parties. The most popular targets are Apple’s Quicktime, Realplayer and Winzip.

When you drill down to the top ten browser vulnerabilities, Microsoft admit that they account for half of the biggest flaws on XP, including by far the top one, but on Vista, they don’t feature in the top ten at all – the number one place goes to a bit of software called Baofeng, which I suspect is a toolbar of some sort…