Before, the key selling point to Apple was that it was virus free. To add to its coolness and more, early users of Apple computers had this to tout.

Apple hardware is “built on the world’s most advanced operating system,” the company’s site declares, and part of the sophistication, it has emphasized, is it's exceptionally strong immune system. But that's no longer true.

Back in April, the Flashback botnet struck more than 600,000 Mac computers worldwide, with more than 300,000 of the machines affected in the U.S. Hackers took advantage of a weakness in Java programs to gain access to Mac users’ machines. Nearly 300 of April’s Flashback attacks were aimed at Apple computers that were based in Cupertino itself.

So instead of its usual marketing spiel, it's got another message on its website which has been replaced by a more generic boast: “It’s built to be safe.” And the slogan of the past — “Safeguard your data. By doing nothing.” — has been replaced by the much gentler “Safety. Built in.”

In an era where every OS now faces a threat to either hacks or viruses, it's safe to say that the only thing we can be sure of is to be wary of best practices, and abreast with current events and be quick to change.