Apple has been known to be a "more secure" platform compared to Microsoft. Macs have boasted a "no-virus" environment for years now and Apple has been applauded for this. I don't think Apple should be proud of this. As a matter of fact, I think they should be ashamed.
Why? Because Apple's market share is so small that virus makers don't even bother with Macs. This is the same reason UNIX is also more secure. No one writes viruses for these systems because no one uses them! (I take that back - UNIX is secure.)
"How would you know, you're not a programmer. Apple is really THAT secure!"
I seriously doubt that. Why? One word - Jailbreak. A jailbreak is almost always available within 24 hours of a firmware update. Is that a secure system? And Apple voiding warranties on jailbroken devices tells me they don't want their precious "iDevices" jailbroken. But people can still do it anyway. The iPhone has also been a target of several security leaks. Why? because its popular.
Think of it this way, there are no re-occurring viruses on Friendster, unlike the kind and number we see on Facebook. Does that mean that Friendster is more secure than Facebook? I don't think so.
So I think Apple should instead rejoice when it gets a report of a widespread virus on Macs. That is a signal that Macs are getting a significant market share.
Update: What is a secure system? A PS3. It's a four-year old system and it still doesn't run pirated discs. While its "batch mates" the Wii and XBOX 360 have been hacked into and runs bootleg games.