131 citations · 208 across the 14 of their papers we have counts for
15 papers
Dagger: Decoupling-based Model Stealing Attack against Graph Neural Networks
Ying Song, Xiaowei Jia, Balaji Palanisamy
As Graph Neural Networks (GNNs) are widely deployed as Machine Learning-as-a-Service (MLaaS) APIs, model stealing attacks have emerged as a critical security threat. By querying a…
Blockchain Takeovers in Web 3.0: An Empirical Study on the TRON-Steem Incident
Chao Li, Runhua Xu, Balaji Palanisamy +4
A fundamental goal of Web 3.0 is to establish a decentralized network and application ecosystem, thereby enabling users to retain control over their data while promoting value exch…
T-Watch: Towards Timed Execution of Private Transaction in Blockchains
Chao Li, Balaji Palanisamy
In blockchains such as Bitcoin and Ethereum, transactions represent the primary mechanism that the external world can use to trigger a change of blockchain state. Transactions serv…
How Hard is Takeover in DPoS Blockchains? Understanding the Security of Coin-based Voting Governance
Chao Li, Balaji Palanisamy, Runhua Xu +3
Delegated-Proof-of-Stake (DPoS) blockchains, such as EOSIO, Steem and TRON, are governed by a committee of block producers elected via a coin-based voting system. We recently witne…
Cross-Consensus Measurement of Individual-level Decentralization in Blockchains
Chao Li, Balaji Palanisamy, Runhua Xu +1
Decentralization is widely recognized as a crucial characteristic of blockchains that enables them to resist malicious attacks such as the 51% attack and the takeover attack. Prior…
SteemOps: Extracting and Analyzing Key Operations in Steemit Blockchain-based Social Media Platform
Chao Li, Balaji Palanisamy, Runhua Xu +2
Advancements in distributed ledger technologies are driving the rise of blockchain-based social media platforms such as Steemit, where users interact with each other in similar way…
NF-Crowd: Nearly-free Blockchain-based Crowdsourcing
Chao Li, Balaji Palanisamy, Runhua Xu +2
Advancements in distributed ledger technologies are rapidly driving the rise of decentralized crowdsourcing systems on top of open smart contract platforms like Ethereum. While dec…
EventWarden: A Decentralized Event-driven Proxy Service for Outsourcing Arbitrary Transactions in Ethereum-like Blockchains
Chao Li, Balaji Palanisamy
Transactions represent a fundamental component in blockchains as they are the primary means for users to change the blockchain state. Current blockchain systems such as Bitcoin and…
Comparison of Decentralization in DPoS and PoW Blockchains
Chao Li, Balaji Palanisamy
Decentralization is a key indicator for the evaluation of public blockchains. In the past, there have been very few studies on measuring and comparing the actual level of decentral…
SilentDelivery: Practical Timed-delivery of Private Information using Smart Contracts
Chao Li, Balaji Palanisamy
This paper proposes SilentDelivery, a secure, scalable and cost-efficient protocol for implementing timed information delivery service in a decentralized blockchain network. Silent…
Incentivized Blockchain-based Social Media Platforms: A Case Study of Steemit
Chao Li, Balaji Palanisamy
This paper presents an empirical analysis of Steemit, a key representative of the emerging incentivized social media platforms over Blockchains, to understand and evaluate the actu…
Scalable and Privacy-preserving Design of On/Off-chain Smart Contracts
Chao Li, Balaji Palanisamy, Runhua Xu
The rise of smart contract systems such as Ethereum has resulted in a proliferation of blockchain-based decentralized applications including applications that store and manage a wi…
Decentralized Release of Self-emerging Data using Smart Contracts
Chao Li, Balaji Palanisamy
In the age of Big Data, releasing protected sensitive data at a future point in time is critical for various applications. Such self-emerging data release requires the data to be p…
Decentralized Privacy-preserving Timed Execution in Blockchain-based Smart Contract Platforms
Chao Li, Balaji Palanisamy
In the age of Big Data, enabling task scheduling while protecting users' privacy is critical for various decentralized applications in blockchain-based smart contract platforms. Su…
Privacy in Internet of Things: from Principles to Technologies
Chao Li, Balaji Palanisamy
Ubiquitous deployment of low-cost smart devices and widespread use of high-speed wireless networks have led to the rapid development of the Internet of Things (IoT). IoT embraces c…