Litecoin's Chain Reorg: A Tale of Patches and Attacks
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Litecoin's Chain Reorg: A Tale of Patches and Attacks
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Litecoins recent chain reorganization due to a Mimblewimble Extension Block protocol flaw was not a zero-day exploit as initially claimed by the Litecoin Foundation. GitHub commit logs reveal a private patch for the main consensus bug four weeks prior to the attack, and a denial-of-service fix was released just before the incident. The attacker, who had prepared a wallet in advance, exploited the vulnerability by combining a denial-of-service attack with invalid peg-outs, causing temporary chain takeovers. The networks resilience eventually flipped it back, showcasing the risks in older proof-of-work setups like Litecoin. The foundation has not addressed the patch history, and details on any stolen funds remain undisclosed.
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