<ul><li>Unknown attacker exploited the Pectra upgrade on Sepolia testnet, resulting in empty block mining.</li><li>Developers implemented a private fix to counter the attack and resumed full block production.</li><li>The incident did not impact Ethereum's mainnet, but developers have postponed the mainnet launch of the Pectra upgrade for further testing and debugging.</li><li>Ethereum's market is struggling, with a decrease in Ether's value and significant outflows from exchanges.</li></ul>

Mysterious Attack on Pectra Upgrade Delays Mainnet Launch

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