activity
20112026
most citedBe Selfish and Avoid Dilemmas: Fork After Withholding (FAW) Attacks on Bitcoin

189 citations · 342 across the 10 of their papers we have counts for

collaborators

10 papers

cs.SE2026

SafePlanner: Testing Safety of the Automated Driving System Plan Model

Dohyun Kim, Sanggu Han, Sangmin Woo +4

In this work, we present SafePlanner, a systematic testing framework for identifying safety-critical flaws in the Plan model of Automated Driving Systems (ADS). SafePlanner targets…

cs.CR2022★ 2 cited

Attack of the Clones: Measuring the Maintainability, Originality and Security of Bitcoin 'Forks' in the Wild

Jusop Choi, Wonseok Choi, William Aiken +5

Since Bitcoin appeared in 2009, over 6,000 different cryptocurrency projects have followed. The cryptocurrency world may be the only technology where a massive number of competitor…

cs.SE2020★ 106 cited

Revisiting Binary Code Similarity Analysis using Interpretable Feature Engineering and Lessons Learned

Dongkwan Kim, Eunsoo Kim, Sang Kil Cha +2

Binary code similarity analysis (BCSA) is widely used for diverse security applications, including plagiarism detection, software license violation detection, and vulnerability dis…

cs.DC2020

Analysis of LFT2

Geunwoo Lim, Yujin Kwon, Yongdae Kim

For a decentralized and transparent society, blockchain technology has been developed. Along with this, quite a few consensus algorithms that are one of core technologies in blockc…

cs.CR2019★ 3 cited

An Eye for an Eye: Economics of Retaliation in Mining Pools

Yujin Kwon, Hyoungshick Kim, Yung Yi +1

Currently, miners typically join mining pools to solve cryptographic puzzles together, and mining pools are in high competition. This has led to the development of several attack s…

cs.CR2019★ 11 cited

Impossibility of Full Decentralization in Permissionless Blockchains

Yujin Kwon, Jian Liu, Minjeong Kim +2

Bitcoin uses blockchain technology and proof-of-work (PoW) mechanism where nodes spend computing resources and earn rewards in return for spending these resources. This incentive s…

cs.DC2019★ 2 cited

Is Stellar As Secure As You Think?

Minjeong Kim, Yujin Kwon, Yongdae Kim

Stellar is one of the top ten cryptocurrencies in terms of market capitalization. It adopts a variant of Byzantine fault tolerance (BFT), named federated Byzantine agreement (FBA),…

cs.CR2019★ 15 cited

Bitcoin vs. Bitcoin Cash: Coexistence or Downfall of Bitcoin Cash?

Yujin Kwon, Hyoungshick Kim, Jinwoo Shin +1

In Aug. 2017, Bitcoin was split into the original Bitcoin (BTC) and Bitcoin Cash (BCH). Since then, miners have had a choice between BTC and BCH mining because they have compatible…

cs.CR2017★ 189 cited

Be Selfish and Avoid Dilemmas: Fork After Withholding (FAW) Attacks on Bitcoin

Yujin Kwon, Dohyun Kim, Yunmok Son +2

In the Bitcoin system, participants are rewarded for solving cryptographic puzzles. In order to receive more consistent rewards over time, some participants organize mining pools a…

cs.DC2011★ 14 cited

SocialCloud: Using Social Networks for Building Distributed Computing Services

Abedelaziz Mohaisen, Huy Tran, Abhishek Chandra +1

In this paper we investigate a new computing paradigm, called SocialCloud, in which computing nodes are governed by social ties driven from a bootstrapping trust-possessing social…