Hey PSA for Pokemon Scarlet/Violet players:
PLEASE STOP TRADING HACKED SHINY POKEMON IN SURPRISE TRADE.
Not only does it suck because the pokemon can't be used for online play- you're actively harming other players.
People have recently brought pokemon they didn't know were hacked to tournaments because they got them through surprise trade and they got banned for doing so.
If you get a shiny hacked pokemon (easiest way to tell is if OT is something like Monforge.com or RioluHQ.com) release it. It's safer for you if you do. It's against pokemon's TOS and there's always a risk of them just disappearing from your HOME boxes one day or you getting banned for having them.
This wouldn't be such a massive issue if gamefreak actually put into place the same type of hack detection for surprise trade they do for every other bit of online play and tournaments but they can't be bothered to. I've had to release 3 hacked pokemon so far in trying to hatch a shiny because people keep trading them.
If you get one: Take the ability patch from it (the item itself is safe). And release it. It's the best way to keep other unknowing players safe.