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Ethereum Protocol Fellowship 6th week update

Self Introduction

I’m a PhD student in Syracuse University in Blockchain security area, and now working on the Ethereum Mempool Attack Detection&Defence. Very excited joining in the fellowship and make some contribution to the Ethereum Portocol.

I have implemented DoS defense schemes on the latest Geth client (version 1.10.26), The defenses are extensively tested in our lab (controlled environment) and are secure against known DETER attacks. Here is the link for the update:
https://github.com/ethereum/go-ethereum/pull/26311/files.
For now, I am under Marius's mentorship,

Marius is one of the contributors of Geth client. His modification is based on the code I updated:
https://github.com/MariusVanDerWijden/go-ethereum/tree/txpool-attacks

and he helped me review the code and make my modification more productive.

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Ethereum Protocol Fellowship 14th week update

Here is my mentor's (@https://github.com/MariusVanDerWijden) implementation based on the version I pushed before. https://github.com/ethereum/go-ethereum/compare/master...MariusVanDerWijden:txpool-attacks?expand=1 The previous attack defenses are being tested on the real network and the refactor and benchmarking results are not significantly worse than the current version: name old time/op new time/op delta ListAdd-24 83.5ms ± 2% 128.5ms ± 0% ~ (p=0.333 n=2+2) PendingDemotion100-24 85.8ns ± 0% 84.9ns ± 1% ~ (p=0.667 n=2+2) PendingDemotion1000-24 82.2ns ± 2% 84.1ns ± 2% ~ (p=0.667 n=2+2)

Feb 9, 2023
Ethereum Protocol Fellowship 15th week update

After the discussion with mentor Marius, we agree that the modified version is working well on the ED1,2,4, but may cause the txpool to be flooded with underpriced transactions as they can not be replaced if a future transaction exists. So the new version contains the defense of two attacks: future transaction evicting a pending transaction a transaction overspending the funds of a sender Here is the merge request on go-ethereum mempool we just pushed. https://github.com/ethereum/go-ethereum/pull/26648

Feb 9, 2023
Ethereum Protocol Fellowship 10th week update

Self Introduction I’m a PhD student in Syracuse University in Blockchain security area, and now working on the Ethereum Mempool Attack Detection&Defence. Very excited joining in the fellowship and make some contribution to the Ethereum Portocol. Progress As I finished the first part of the defense and test it successfully on the mainnet, I started to dive into the more general way of Dos Attack defense which can make the codes more ellegent and easy to read and can save time and space cost. For now, here is the strategy to mitigate ADAMS attacks. The idea is to enforce that a valid transaction always has a higher priority in admission than an invalid transaction, despite their prices. Figure belw depicts the priority among transactions of different types, that is, parent valid transactions, child valid transactions and invalid transactions (including future and latent-overdraft transactions). Only among transactions of the same type, price-based priority is enforced. We call it validity-first admission priority. We enforce validity-first priority by two proposed admission policies:

Jan 20, 2023
Ethereum Protocol Fellowship 12th week update

Self Introduction I’m a PhD student in Syracuse University in Blockchain security area, and now working on the Ethereum Mempool Attack Detection&Defence. Very excited joining in the fellowship and make some contribution to the Ethereum Portocol. Progress Attacks For precvious attacks, we introduced four patterns ED1-4 to defence, here are other patterns. Pattern LD1: It locks the mempool by directly crafting future transactions. On an initially empty mempool, it sends the same transactions with Pattern ED1.

Jan 19, 2023
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