Three Attacks on Proof-of-Stake Ethereum · HackerPapers discussions

Three Attacks on Proof-of-Stake Ethereum — mentioned by michaelsbradley

Fri, 11 Mar 2022 00:54:17 GMT

I don't think we'll see practical attacks against it until one of the important ones goes PoS. I definitely agree with that. I think that's where PoS has some real weaknesses Sure, attacks and mitigations for them are actively being researched. A couple of examples: https://ethresear.ch/t/change-fork-choice-rule-to-mitigate-b... https://arxiv.org/abs/2110.10086

Paper and discussion history. A mention is not an endorsement.

Three Attacks on Proof-of-Stake Ethereum — mentioned by Gosper

Mon, 15 Nov 2021 16:16:07 GMT

I don't know why you were flagged, but if your question was in earnest: Bitcoin almost certainly won't move. Because those touted energy efficient protocols come at the cost of much weaker security guarantees which undermine a key point of Bitcoin. Proof of stake, the forerunner of energy efficient protocols, may work better for networks that have different aims, although smart contract oriented blockchains still need good security to be trusted. The stupendous levels of complexity involved in trying to hammer out proof of stake into a viable method of energy efficient mining make the…

Paper and discussion history. A mention is not an endorsement.

Three Attacks on Proof-of-Stake Ethereum — mentioned by gh55

Fri, 12 Nov 2021 17:37:10 GMT

More recently Vitalik has said Ethereum PoS is at least a couple of years away, likely due to new attack vectors that require further research https://arxiv.org/abs/2110.10086, one of which enables an attack with only 0.09% of the total staked. It would have been foolish to fork knowing attacks like these are still being discovered. "with more than 99.6% probability, an adversary with 0.09% of total stake is in a position to execute a 1-reorg for any given day." Another which could prevent the chain moving forwards indefinitely. "an adversary controlling 15% of stake can stall PoS Ethereum"

Paper and discussion history. A mention is not an endorsement.

Three Attacks on Proof-of-Stake Ethereum — mentioned by belter

Wed, 20 Oct 2021 19:02:20 GMT

"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. We provide refined variants of these attacks, considerably relaxing the requirements on adversarial stake and network timing, and thus rendering the attacks more severe. Combining techniques from both refined attacks, we obtain a third attack which allows an adversary…

Paper and discussion history. A mention is not an endorsement.

Three Attacks on Proof-of-Stake Ethereum — HN submission

Wed, 20 Oct 2021 19:02:20 GMT

Three Attacks on Proof-of-Stake Ethereum

11 points; 1 discussion reply on HN. Paper and source history. A submission is not an endorsement.