PANews reported on February 23 that after Bybit was hacked, some people asked why Ethereum could not "roll back" the blockchain to reverse the hacker attack. In response, Ethereum core developer timbeiko.eth published an article to explain. He said that although Bitcoin was able to "roll back" its blockchain 15 years ago, today, the interconnected nature of Ethereum and the settlement of on-chain <> off-chain economic transactions make this problem difficult today.