OS X has a spectacular reputation for stability and security. At this writing, there still hasn’t been a single widespread OS X virus. There’s also no Windows-esque plague of spyware (downloaded programs that do something sneaky behind your back).
The usual rap is, “Well, that’s because Windows is a much bigger target. What virus writer is going to waste his time on a computer with 8 percent market share?”
That may be part of the reason OS X is virus-free. But OS X was also built more intelligently from the ground up. Listed below are a few of the many drafty corners of a typical operating system that Apple has solidly plugged:
OS X has always come from the factory with all of its ports shut and locked.