I'd assume making edits to make it undesirable would flag something. Though I'm no expert so I can't confirm this. However - "nightly scans ensure changes are flagged immediately"
Maybe it matches certain things to redump and if it comes back different it's removed?
"NintenDON'T sue me please haha"
Im just sharing a concern here, im not privy of how it works of course, but is it not risky for any random person to upload a file? What if something "not desirable" is uploaded with the game. Of course if someone has a clarification. Sorry, im just a little paranoid when it comes to these things.