Apple depend on their small market share to make it not worthwhile for hackers to expend the effort of targeting Apple products. You might call this the "Ostrich" approach: Sticking your head in the sand and ignoring the problem. Sure, it may feel good for the moment. But remember: When you do that, your butt is sticking up in the air for anyone to wander by and abuse, and your only 'protection' is that someone else is more exposed than you are.
"Security Through Obscurity" is no protecton.
Don't use Safari. Ever. *Anything* else is better and more secure.http://blogs.zdnet.com/security/?p=2917