关键词: 区块链, 安全, 加密货币, 日蚀攻击, 路由劫持

Abstract: Blockchain has seen its wide application in recent years, and its security vulnerabilities, as well as the corresponding countermeasures, have attracted an increasing interest from developers and researchers. Essentially, Blockchain is a form of decentralized database which relies on network to exchange information and achieve consensus, so the network layer security of a blockchain system is becoming a hot topic. This paper first introduces the basic mechanisms of blockchain, then surveys and analyzes latest research works on its networking layer security. Based on that, future research directions are suggested and discussed.

Key words: blockchain, security, cryptocurrency, eclipse attack, route hijacking