It is feasible for any computer technology to get a virus - regular phones, iPods, iMacs, iBooks and iPads, Linux and other Unix-based systems as well as Windows machines. But most of the hackers focus on Windows because there are more of these systems out there, the security is inherently weaker (although that is supposed to be less so with Windows 7 and I think Windows-XP too), the majority of their users are less likely to have secured their devices well than those of Unix-based systems and are more likely to readily fall prey to the likely means of entry of viruses.
It has always been only a matter of time before they start on the Apple systems - there are far more of them out there now, the users are now less likely to be savvy, and wireless connections makes access so very much easier.
So it is possible that it's a virus yes - but if there are starting to be attacks then someone will be writing about it - have you Googled?