Technically, the Blast team could recover the $62m lost in the Munchables exploit since they control the bridge contract that holds the bridged ETH/stETH. It wouldn't set a good precedent for future exploits/issues, but it is possible. An invalid state root would need to be forced by the Blast team which would erase the hacked transaction. The chain might need to halt completely to do this.
I don't think any rollup has done something like this on mainnet yet but the bridge contracts are upgradeable. The upgradeability was mostly for any bugs related to fault/validity proving, but a catastrophic exploit might be reasonable enough. Not a decision for me to make tho
@0xCygaar don't see how this would prevent them using a third party bridge and just having access to funds in minutes
@0xCygaar Selectively rolling back exploits leads to censorship. Blast could start dictating terms necessary to consider "rollback support".
@0xCygaar This move could make more brand damage. But the fact the solution exist...
That would set a great precedent for future exploits/issues what lol, whitehat hackers would still exist and bounties still would happen inside the chain. This just forces people to not steal, anything that prevents thieves/criminals from stealing legitimate money is worth the tradeoff