Ethereum core developer Tim Beiko has cautioned against the idea of rolling back the Ethereum blockchain in response to the Bybit hack, which is attributed to the North Korea-linked Lazarus Group. Beiko indicated that such a rollback could result in costs exceeding $1.5 billion and could cause widespread damage to the network. The suggestion for a rollback has largely been promoted by individuals outside the Ethereum community, particularly Bitcoin and Solana supporters, rather than by Ethereum developers themselves. Critics argue that these calls for a rollback are misleading and stem from a misunderstanding of the Ethereum network's principles. Additionally, some industry experts have stated that the notion of rolling back Ethereum has never been a serious consideration among experienced crypto participants.