Oh no! What if halo 2's title screen asked you to press L, R, back, and start to play?! Most newbie people with xboxes wouldn't know how to disable IGR and a lot of people would be screwed!!!
Or what if MS played dumb and made a 'secondary' dashboard coincidentally called "evoxdash.xbe" that overwrote your dashboard!!! Can MS get in trouble for this if they 'didn't know' there was an evoxdash.xbe file?
Or what if MS could detect if the xboxes TSOPs write-enable pads are 'enabled' and tried to reflash their bios with a regular one?!
I am only partially joking around here, I really don't think anyone is going to go out of their way to make viruses for xboxes... most kids only want to bring down Windows (98, XP, etc)... a lot of kids hate MS and modding xboxes overall 'hurts' micro$ofts business model so 'micro$oft haters' trying to hurt the homebrew xbox scene would just be doing the opposite of what they want. But then again, most kiddie wannabe hackers out there just get a kick out of pissing people off and trying to break anything that isn't theirs knowing that someone out there is pulling their hair out and kicking their dog around.