Segurança no Mac OS X vs Windows

Qual o mais seguro? Um artigo interessante:
Myth or Fact? Is Mac OS X Really More Secure than Windows?

Apple's ads often promote Mac OS X as a much more secure platform than Windows, and that sense of security and freedom from viruses, spyware, and network attacks is one of the things that often encourages Windows users to buy a Mac. But is Mac OS X's greater security real or just marketing? The truth is that it's a combination of fact and myth. Ryan Faas tells you why.