The MEV bot known as "Yoink" frontran a $7.8M exploit on a Safe wallet by grabbing the tokens first. These MEV bots constantly scan the mempool of unconfirmed transactions and copy any profitable transaction they find. The attack forced KelpDAO to freeze rsETH on the recipient address, meaning that the protocol isn't fully decentralized or censorship-resistant. https://thedefiant.io/news/hacks/mev-bot-front-runs-7-8-million-rseth-exploit-on-ethereum