Via FBI. And geez, guys, stop with the paranoia already, the game's out so there aren't any real risks of being banned unless you cheat online or Nintendo does another banwave on CFW users, but even that is a hit or miss. We don't need a bajillion thread asking the same question.
I have played my leaked ultra moon online the 17th it has worked out really good no banns i even link traded all my mystery gift pokemon over to ultra moon but what sucks is that it will not let me trade my marshadow z move at all and i'm still kinda upset about it but i have gotten over it.
I played online since the leak got out, since I'm using a public seed there's no risk (As if there would be a ban, I would surely be banned whatever I do). Since no ban happened and the game is officially out it should be pretty safe. At least with online-related blanket bans.
Mm, no. It took a few days, and happened just after release. Also, injecting an unbanned seed won't unban 022-2812, which is what came with the SuMo bans, and will probably come with this too. I wouldn't be saying "there's no risk".