> ...what happens when I borrow enough ETH to win blocks, deliberately mis-verify TX...
Ethereum already "slashes" the staked ETHs of those who try to game the system (Ethereum already has one chain on PoS): the coins of stakes who try to cheat the system are not even confiscated, they're destroyed (making every other holder a little bit richer).
I don't know if this shall work or not, but that's their plan to keep bad actors from trying to attack the system.
Ethereum already "slashes" the staked ETHs of those who try to game the system (Ethereum already has one chain on PoS): the coins of stakes who try to cheat the system are not even confiscated, they're destroyed (making every other holder a little bit richer).
I don't know if this shall work or not, but that's their plan to keep bad actors from trying to attack the system.