10 citations · 38 across the 8 of their papers we have counts for
5 papers · 1 filter
PDoS: A Profitable Denial-of-Service Attack against Proof-of-Work Blockchain Liveness
Junjie Hu, Tianzhu Han, Na Ruan
The security and liveness of Proof-of-Work (PoW) blockchains fundamentally depend on the economic rationality of miners. Existing incentive-driven denial-of-service attacks, such a…
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…
Adversarial Representation Sharing: A Quantitative and Secure Collaborative Learning Framework
Jikun Chen, Feng Qiang, Na Ruan
The performance of deep learning models highly depends on the amount of training data. It is common practice for today's data holders to merge their datasets and train models colla…
FraudJudger: Real-World Data Oriented Fraud Detection on Digital Payment Platforms
Ruoyu Deng, Na Ruan
Automated fraud behaviors detection on electronic payment platforms is a tough problem. Fraud users often exploit the vulnerability of payment platforms and the carelessness of use…
Catfish Effect Between Internal and External Attackers:Being Semi-honest is Helpful
Hanqing Liu, Na Ruan, Joseph K. Liu
The consensus protocol named proof of work (PoW) is widely applied by cryptocurrencies like Bitcoin. Although security of a PoW cryptocurrency is always the top priority, it is thr…