Offchain Labs developer terence.eth tweeted that on-chain data shows that the malicious validator who attacked the MEV robot yesterday has been punished by Slash and kicked out of the validator queue. This validator is penalized for proposer manipulation, which is when a qualified proposer initiates two or more conflicting proposals. Foresight News previously reported that a smart contract developer named 3155.eth on Twitter said that several top MEV robots had been hacked and the loss had reached 20 million US dollars. Substitution thus stealing funds from MEV robots.