2 citations · 2 across the 5 of their papers we have counts for
4 papers · 1 filter
Blockchain Attacks and Defenses: A Layered and Cross-Domain Survey
Junjie Hu, Na Ruan
Blockchains have evolved from simple distributed ledgers into programmable platforms that process complex application logic and carry significant financial value. All modern Web3 s…
Larger Scale Offers Better Security in the Nakamoto-style Blockchain
Junjie Hu
Traditional security models for Nakamoto-style blockchains assume instantaneous synchronization among malicious nodes, which overestimate adversarial coordination capability. We re…
Timestamp Manipulation: Incentive Attacks on Timestamp-Based Proof-of-Work Blockchains with Minimal Additional Risk
Junjie Hu, Na Ruan, Sisi Duan
Nakamoto consensus is the most widely adopted decentralized consensus mechanism in cryptocurrency systems. Since its proposal in 2008, many studies have investigated incentive atta…
BM-PAW: A Profitable Mining Attack in the PoW-based Blockchain System
Junjie Hu, Na Ruan
Mining attacks enable an adversary to procure a disproportionately large portion of mining rewards by deviating from honest mining practices within the PoW-based blockchain system.…