There&#x27;s two separate things that are conflated here:<p>* Is Windows security equal to or greater than Linux and OS X (Probably yes)<p>* Are the overwhelming majority of viruses written to target Windows systems (yes)<p>I really enjoyed this article on security economics which goes into this in more depth: <a href="http:&#x2F;&#x2F;tidbits.com&#x2F;article&#x2F;15939" rel="nofollow">http:&#x2F;&#x2F;tidbits.com&#x2F;article&#x2F;15939</a>