There's two separate things that are conflated here: * Is Windows security equal to or greater than Linux and OS X (Probably yes) * Are the overwhelming major

There's two separate things that are conflated here: * Is Windows security equal to or greater than Linux and OS X (Probably yes) * Are the overwhelming majority of viruses written to target Windows systems (yes) I really enjoyed this article on security economics which goes into this in more depth: http://tidbits.com/article/15939 http://tidbits.com/article/15939