Ethereum’s highly anticipated Pectra upgrade hit a major roadblock on the Sepolia testnet after an unknown attacker exploited a technical loophole, forcing developers to issue a behind-the-scenes emergency fix. The unexpected incident not only delayed the upgrade but also highlighted the challenges of securing blockchain networks against sophisticated disruptions. On March 5, Ethereum developers rolled The post Ethereum Pectra Upgrade Attacked On Sepolia Testnet appeared first on CryptoCoin.News .