Sheng Zhong

Trace-Driven Automated PoC Synthesis for On-Chain Attacks

Blockchain systems are increasingly targeted by on-chain attacks that exploit vulnerabilities in smart contracts, resulting in billions of dollars in losses. Understanding and reproducing these attacks is critical for defense, yet currently relies on manually crafting proofs-of-concept (PoCs), which is labor-intensive,...

Adaptive Location Privacy in Location-Based Services: Service-Specific Perturbation for Balancing Security and Utility

Spa: Stealthy and Persistent Backdoor Attacks in Federated Learning via Feature-Space Alignment

Federated Learning (FL) has emerged as a leading paradigm for privacy-preserving machine learning, yet the distributed nature of FL introduces unique security challenges, notably the threat of backdoor attacks. However, existing attack strategies face a critical limitation: reliance on end-to-end supervision creates a...