20 citations · 41 across the 8 of their papers we have counts for
8 papers
Asymmetric Mempool DoS Security: Formal Definitions and Provable Secure Designs
Wanning Ding, Yibo Wang, Yuzhe Tang
The mempool plays a crucial role in blockchain systems as a buffer zone for pending transactions before they are executed and included in a block. However, existing works primarily…
Understanding the Security Risks of Decentralized Exchanges by Uncovering Unfair Trades in the Wild
Jiaqi Chen, Yibo Wang, Yuxuan Zhou +4
DEX, or decentralized exchange, is a prominent class of decentralized finance (DeFi) applications on blockchains, attracting a total locked value worth tens of billions of USD toda…
Towards Automated Discovery of Asymmetric Mempool DoS in Blockchains
Yibo Wang, Yuzhe Tang, Kai Li +2
In blockchains, mempool controls transaction flow before consensus, denial of whose service hurts the health and security of blockchain networks. This paper presents MPFUZZ, the fi…
Defining and Preventing Asymmetric Mempool DoS in Ethereum with saferAd
Wanning Ding, Yibo Wang, Yuzhe Tang
This paper presents secure mempool designs under asymmetric DoS attacks. We formulate safety definitions under two abstract DoSes, namely eviction- and locking-based attacks. We pr…
Efficiently Hardening SGX Enclaves against Memory Access Pattern Attacks via Dynamic Program Partitioning
Yuzhe Tang, Kai Li, Yibo Wang +2
Intel SGX is known to be vulnerable to a class of practical attacks exploiting memory access pattern side-channels, notably page-fault attacks and cache timing attacks. A promising…
Enabling Cost-Effective Blockchain Applications via Workload-Adaptive Transaction Execution
Yibo Wang, Yuzhe Tang
As transaction fees skyrocket today, blockchains become increasingly expensive, hurting their adoption in broader applications. This work tackles the saving of transaction fees for…
TopoShot: Uncovering Ethereum's Network Topology Leveraging Replacement Transactions
Kai Li, Yuzhe Tang, Jiaqi Chen +2
Ethereum relies on a peer-to-peer overlay network to propagate information. The knowledge of Ethereum network topology holds the key to understanding Ethereum's security, availabil…
iBatch: Saving Ethereum Fees via Secure and Cost-Effective Batching of Smart-Contract Invocations
Yibo Wang, Kai Li, Yuzhe Tang +4
This paper presents iBatch, a middleware system running on top of an operational Ethereum network to enable secure batching of smart-contract invocations against an untrusted relay…