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【2023春季全球午餐会第15期】Decentralized Systems Security in the Wild
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【2023春季全球午餐会第15期】Decentralized Systems Security in the Wild Dr. Yuzhe Tang is an associate professor in the EECS department at Syracuse University. Yibo Wang is a Ph.D. student in the FSSL Lab of Computer Science at Syracuse University advised by Dr. Yuzhe Tang. Today, public blockchains are a multi-trillion-dollar economy. While the existing literature has examined blockchain security at the consensus-protocol level, the system-level security, namely the security of complex and evolving blockchain software systems in deployment, needs to be better understood. This is evidenced by the numerous reported bugs and high-impact blockchain attacks on the Internet. In this talk, we will present our recent works examining the systems-level security of the connection between Ethereum blockchain and web3.0 users. The research uncovers several high-impact vulnerabilities under denial-of-service attacks (CCS’21, NDSS’21, IMC’21). These vulnerabilities reveal the fundamental design challenges in the tradeoff between enabling rich functionalities (e.g., by supporting smart contracts) and achieving security against DoS. The vulnerabilities have been confirmed and the defense code we developed has been merged into mainstream Ethereum client. By the end, we will talk about other recent research and educational efforts in my group on blockchain security, cost-efficiency, and broader applications.
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