But this is definitely not a hack, otherwise all the savings would be stolen.
I am not technical guy but some analysists have confirmed that it's an attack of sorts where the hacker profits from returned gas fees
This tweet has some details -
https://twitter.com/Supremacy_CA/status/1582789430368092160When you send your money to a smart contract, you should be stopped by a high commission. In this case, the validator made a profit.
The most reliable way to interact with mart contracts is to use separate wallets that do not have a lot of money.