While Apple has managed to maintain an image of being virus-impervious, most of us in the computer outsourcing business have always contended that the reason there weren't many native Mac viruses was because there just weren't enough Macs to make it worthwhile for evil hackers to bother with it when there were far more Windows PCs out there to attack. In fact, as the Mac continues to becomes more popular on the Intel platform, I imagine computer help desks all over the country will start to see more infected ones. The popularity of the iPhone (30 million sold and counting) has already attracted some attention. A young man in Australia has written a worm that infects the iPhone while pretending to be a Rick Astley screen saver. I have to admit that I didn't know who Astley was, but this is sure to raise his popularity briefly.

One of the most frequent questions from my Indianapolis small business computer consulting customers is, "What can I do to ensure that my network is safe from hackers?" I always answer the same way: "Disconnect your machines from the Internet."

That's the only way to be sure, and even then you may have a mole in your own organization who ferrets out data on a flash drive. (How about that, two rodents in the same sentence?) Data security is an important element of any good network design. We do all we can to keep our computer network services customers' data safe. The best analogy I can use is your home security. You lock the doors when you leave to keep bad people out. If you feel you're at a higher risk, you turn on an alarm as well. These measures will keep out most burglars or thieves. They'll just move on to the next house in search of one without an alarm or with an unlocked door. However, if the burglar is looking to get something from you in particular, your locks and alarms become a nuisance to him. He'll have to plan better and it will take longer, but if he's committed, he'll get around your reasonable precautions. The same holds true for your network. Practice safe computing and avoid upsetting anyone who might have crazy tech skills.

If those infected iPhone users had practiced safe computing, they wouldn't have jailbroken their phones, and the worm wouldn't have gotten in.