None.
I remember CZ proposed for a rollback when Binance was hacked but later retracted. AFAIK, the chances of that happening is close to zero. It's simply too costly to even try.
aha. ok. the story with over 7000 bitcoins in 2019
quote from Binance CEO

Further update: Binance CEO Zhao said the company will not pursue a rollback of the bitcoin blockchain.
Ok.Zero. thank you. i was really not sure. so i asked here and found the right answer. thanks