2 papers
cs.CR2026
Ordering Power is Sanctioning Power: Sanction Evasion-MEV and the Limits of On-Chain Enforcement
Di Wu, Yuman Bai, Shoupeng Ren +5
Centralized stablecoins such as USDT and USDC enforce sanctions through contract-layer blacklist functions. Yet on public blockchains, a freeze is still an ordinary transaction com…
cs.CR2025
LookAhead: Preventing DeFi Attacks via Unveiling Adversarial Contracts
Shoupeng Ren, Lipeng He, Tianyu Tu +4
The exploitation of smart contract vulnerabilities in Decentralized Finance (DeFi) has resulted in financial losses exceeding 3 billion US dollars. Existing defense mechanisms prim…