Connecting a PC to the Internet using factory settings is like leaving your front door wide open with your valuables out on the coffee table. A Mac, on the other hand, shuts and locks the door, hides the key, and stores your valuables in a safe with a combination known only to you. You have to buy, configure, and maintain such basic protection on a PC.

On a Windows PC, software (both good and evil) can change the system without your even knowing about it. In order for software to significantly modify Mac OS X, you have to type in your password. You’re the decider. You approve changes to your system.

People attempting to break into computers may disguise a malicious program as a picture, movie, or other seemingly harmless file. You might download such files from the web or get them via mail or chat. A PC just blindly downloads them without a peep. A Mac, however, will let you know that you may be getting a wolf in sheep’s clothing. The Mac web browser, Safari, can tell the difference between a file and a program, and alerts you whenever you’re downloading the latter.

A Mac gets much of this out-of-the-box protection from its open source UNIX heritage. The most critical components of Mac OS X are open for review by a worldwide community of security experts. Their input helps Apple continually make Mac OS X ever more secure. And it’s simple to update a Mac with the latest advances. By default, a Mac checks for updates weekly. For pure peace of mind, you can set a Mac to download security updates automatically. Apple digitally signs the updates, so you can be sure they come from a trusted source.

To get a sense of just how big the virus problem is, search for “virus” at both Apple and Microsoft. Compare the number of results. What’s more, the 100 most virulent attacks cause 99.9% of damage from malicious software. None of these attacks work on Mac OS X. Don’t you deserve such protection?