80 citations · 247 across the 24 of their papers we have counts for
24 papers
DynamicFL: Balancing Communication Dynamics and Client Manipulation for Federated Learning
Bocheng Chen, Nikolay Ivanov, Guangjing Wang +1
Federated Learning (FL) is a distributed machine learning (ML) paradigm, aiming to train a global model by exploiting the decentralized data across millions of edge devices. Compar…
Understanding Multi-Turn Toxic Behaviors in Open-Domain Chatbots
Bocheng Chen, Guangjing Wang, Hanqing Guo +2
Recent advances in natural language processing and machine learning have led to the development of chatbot models, such as ChatGPT, that can engage in conversational dialogue with…
ChargeX: Exploring State Switching Attack on Electric Vehicle Charging Systems
Ce Zhou, Qiben Yan, Zhiyuan Yu +4
Electric Vehicle (EV) has become one of the promising solutions to the ever-evolving environmental and energy crisis. The key to the wide adoption of EVs is a pervasive charging in…
VSMask: Defending Against Voice Synthesis Attack via Real-Time Predictive Perturbation
Yuanda Wang, Hanqing Guo, Guangjing Wang +2
Deep learning based voice synthesis technology generates artificial human-like speeches, which has been used in deepfakes or identity theft attacks. Existing defense mechanisms inj…
Security Defense For Smart Contracts: A Comprehensive Survey
Nikolay Ivanov, Chenning Li, Qiben Yan +3
The blockchain technology has been used for recording state transitions of smart contracts - decentralized applications that can be invoked through external transactions. Smart con…
TxT: Real-time Transaction Encapsulation for Ethereum Smart Contracts
Nikolay Ivanov, Qiben Yan, Anurag Kompalli
Ethereum is a permissionless blockchain ecosystem that supports execution of smart contracts, the key enablers of decentralized finance (DeFi) and non-fungible tokens (NFT). Howeve…
Devils in the Clouds: An Evolutionary Study of Telnet Bot Loaders
Yuhui Zhu, Zhenxiang Chen, Qiben Yan +6
One of the innovations brought by Mirai and its derived malware is the adoption of self-contained loaders for infecting IoT devices and recruiting them in botnets. Functionally dec…
Decentralization Paradox: A Study of Hegemonic and Risky ERC-20 Tokens
Nikolay Ivanov, Qiben Yan
In this work, we explore the class of Ethereum smart contracts called the administrated ERC20 tokens. We demonstrate that these contracts are more owner-controlled and less safe th…
Et tu, Blockchain? Outsmarting Smart Contracts via Social Engineering
Nikolay Ivanov, Qiben Yan
We reveal six zero-day social engineering attacks in Ethereum, and subdivide them into two classes: Address Manipulation and Homograph. We demonstrate the attacks by embedding them…
NEC: Speaker Selective Cancellation via Neural Enhanced Ultrasound Shadowing
Hanqing Guo, Chenning Li, Lingkun Li +3
In this paper, we propose NEC (Neural Enhanced Cancellation), a defense mechanism, which prevents unauthorized microphones from capturing a target speaker's voice. Compared with th…
Mining Function Homology of Bot Loaders from Honeypot Logs
Yuhui Zhu, Zhenxiang Chen, Qiben Yan +4
Self-contained loaders are widely adopted in botnets for injecting loading commands and spawning new bots. While researchers can dissect bot clients to get various information of b…
SuperVoice: Text-Independent Speaker Verification Using Ultrasound Energy in Human Speech
Hanqing Guo, Qiben Yan, Nikolay Ivanov +3
Voice-activated systems are integrated into a variety of desktop, mobile, and Internet-of-Things (IoT) devices. However, voice spoofing attacks, such as impersonation and replay at…
GhostTalk: Interactive Attack on Smartphone Voice System Through Power Line
Yuanda Wang, Hanqing Guo, Qiben Yan
Inaudible voice command injection is one of the most threatening attacks towards voice assistants. Existing attacks aim at injecting the attack signals over the air, but they requi…
DoubleStar: Long-Range Attack Towards Depth Estimation based Obstacle Avoidance in Autonomous Systems
Ce Zhou, Qiben Yan, Yan Shi +1
Depth estimation-based obstacle avoidance has been widely adopted by autonomous systems (drones and vehicles) for safety purpose. It normally relies on a stereo camera to automatic…
EthClipper: A Clipboard Meddling Attack on Hardware Wallets with Address Verification Evasion
Nikolay Ivanov, Qiben Yan
Hardware wallets are designed to withstand malware attacks by isolating their private keys from the cyberspace, but they are vulnerable to the attacks that fake an address stored i…
System-Wide Security for Offline Payment Terminals
Nikolay Ivanov, Qiben Yan
Most self-service payment terminals require network connectivity for processing electronic payments. The necessity to maintain network connectivity increases costs, introduces cybe…
Rectifying Administrated ERC20 Tokens
Nikolay Ivanov, Hanqing Guo, Qiben Yan
The developers of Ethereum smart contracts often implement administrating patterns, such as censoring certain users, creating or destroying balances on demand, destroying smart con…
Blockumulus: A Scalable Framework for Smart Contracts on the Cloud
Nikolay Ivanov, Qiben Yan, Qingyang Wang
Public blockchains have spurred the growing popularity of decentralized transactions and smart contracts, but they exhibit limitations on the transaction throughput, storage, and c…
Targeting the Weakest Link: Social Engineering Attacks in Ethereum Smart Contracts
Nikolay Ivanov, Jianzhi Lou, Ting Chen +2
Ethereum holds multiple billions of U.S. dollars in the form of Ether cryptocurrency and ERC-20 tokens, with millions of deployed smart contracts algorithmically operating these fu…
Security and Privacy in the Emerging Cyber-Physical World: A Survey
Zhiyuan Yu, Zack Kaplan, Qiben Yan +1
With the emergence of low-cost smart and connected IoT devices, the area of cyber-physical security is becoming increasingly important. Past research has demonstrated new threat ve…
Constraint-Based Inference of Heuristics for Foreign Exchange Trade Model Optimization
Nikolay Ivanov, Qiben Yan
The Foreign Exchange (Forex) is a large decentralized market, on which trading analysis and algorithmic trading are popular. Research efforts have been focusing on proof of efficie…
SoundFence: Securing Ultrasonic Sensors in Vehicles Using Physical-Layer Defense
Jianzhi Lou, Qiben Yan, Qing Hui +1
Autonomous vehicles (AVs), equipped with numerous sensors such as camera, LiDAR, radar, and ultrasonic sensor, are revolutionizing the transportation industry. These sensors are ex…
A Systematical Study on Application Performance Management Libraries for Apps
Yutian Tang, Haoyu Wang, Xian Zhan +6
Being able to automatically detect the performance issues in apps can significantly improve apps' quality as well as having a positive influence on user satisfaction. Application P…
Characterizing Location-based Mobile Tracking in Mobile Ad Networks
Boyang Hu, Qicheng Lin, Yao Zheng +3
Mobile apps nowadays are often packaged with third-party ad libraries to monetize user data.