Wu Blockchain has learned that the Ethereum consensus layer client Prysm team has released a post-mortem analysis report on the Fusaka mainnet failure that occurred on December 4. The issue was caused by nearly all Prysm nodes exhausting resources while processing specific attestations. The root cause was the high-cost state recalculation of unsynced attestations by the Prysm beacon node. The incident resulted in 41 missed epochs, network participation dropping to 75%, and validators losing approximately 382 ETH in rewards. The team initially addressed the issue temporarily with the `--disable-last-epoch-target` flag and later fundamentally fixed the attestation validation logic in versions v7.0.1 and v7.1.0. This incident highlighted shortcomings in the team's communication and testing processes but also underscored the critical role of Ethereum client diversity in preventing more severe risks of finality loss. https://www.(wublock123.com)/index.php?m=content&c=index&a=show&catid=6&id=53507