Chance of Virus in XBox???

[FlyBoy]

On the front page of XBA there is a news item that talks about a USB device where XBOX owners will be able to connect online and retrieve other people's saved game data. For example, if you can't get by a certain level in a game, you could download someone else's finished work onto your memory card and then move on. Supposedly this will be set up like a KaZaA or Morpheus type database.

My question is... would it be possible for someone sick and twisted to modify their game file once it was loaded into the computer by adding a virus of some sort? This would then spread viruses into other people systems when they downloaded the levels they need. I am not at all interested in this new device coming out (if I want to beat a game, I'll do it myself), but I'm just curious considering the XBOX is basically a computer.