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2021arXiv

Three Attacks on Proof-of-Stake Ethereum

Caspar Schwarz-Schilling, Joachim Neu, Barnabé Monnot +3

Recently, two attacks were presented against Proof-of-Stake (PoS) Ethereum: one where short-range reorganizations of the underlying consensus chain are used to increase individual validators' profits and delay consensus decisions, and one where adversarial network delay is leveraged to stall consensus decisions indefinitely.

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