Yuedong Xu

SCSGuard: Deep Scam Detection for Ethereum Smart Contracts

2021 · arXiv (Cornell University)

Smart contract is the building block of blockchain systems that enables automated peer-to-peer transactions and decentralized services. With the increasing popularity of smart contracts, blockchain systems, in particular Ethereum, have been the "paradise" of versatile …

Blockchain Mining With Multiple Selfish Miners

2023 · IEEE Transactions on Information Forensics and Security

This paper studies a fundamental problem regarding the security of blockchain PoW consensus on how the existence of multiple misbehaving miners influences the profitability of selfish mining. Each selfish miner maintains a private chain and …

Differentially Private Federated Low Rank Adaptation Beyond Fixed-Matrix

2025

Large language models (LLMs) typically require fine-tuning for domain-specific tasks, and LoRA offers a computationally efficient approach by training low-rank adapters. LoRA is also communication-efficient for federated LLMs when multiple users collaboratively fine-tune a global …