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EOSIO, as one of the most representative blockchain 3.0 platforms, involveslots of new features, e.g., delegated proof of stake consensus algorithm andupdatable smart contracts, enabling a much higher transaction per second andthe prosperous decentralized applications (DApps) ecosystem. According to thestatistics, it has reached nearly 18 billion USD, taking the third place of thewhole cryptocurrency market, following Bitcoin and Ethereum. Loopholes,however, are hiding in the shadows. EOSBet, a famous gambling DApp, wasattacked twice within a month and lost more than 1 million USD. No existingwork has surveyed the EOSIO from a security researcher perspective. To fillthis gap, in this paper, we collected all occurred attack events against EOSIO,and systematically studied their root causes, i.e., vulnerabilities lurked inall relying components for EOSIO, as well as the corresponding attacks andmitigations. We also summarized some best practices for DApp developers, EOSIOofficial team, and security researchers for future directions.

A Survey on EOSIO Systems Security: Vulnerability, Attack, and Mitigation