Well, for those who have spoken to me in the last 4 months, I keep stating that the mass of macs out there is leading up to an attack in some way. Normally followed by 'we use a mac we are secure'
Well try reading this blog post
Really, Macs are able to be breached. The time is nigh, honestly soon there will be an attack, or an outbreak that will hit the mac community. The point raised (the reason why Macs haven't been attacked is it just isn't worth it due to market share) in the article above are still valid but only just.