Smart contracts have been plagued by security incidents, which resulted in substantial financial losses. Given numerous research efforts in addressing the security issues of smart contracts, we wondered how software practitioners build security into smart contracts in practice. We performed a mixture of qualitative and quantitative studies with 13 interviewees and 156 survey respondents from 35 countries across six continents to understand practitioners' perceptions and practices on smart contract security. Our study uncovers practitioners' motivations and deterrents of smart contract security, as well as how security efforts and strategies fit into the development lifecycle. We also find that blockchain platforms have a statistically significant impact on practitioners' security perceptions and practices of smart contract development. Based on our findings, we highlight future research directions and provide recommendations for practitioners.

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智能合约安全：从业者的观点

智能合约受到安全事件的困扰，造成重大财务损失。在解决智能合约的安全性问题方面进行了大量研究工作之后，我们想知道软件从业者如何在实践中将安全性融入智能合约中。我们对来自六大洲35个国家的13名受访者和156名调查受访者进行了定性和定量研究，以了解从业人员对智能合约安全的看法和实践。我们的研究揭示了从业人员对智能合约安全性的动机和威慑力，以及安全性工作和策略如何适应开发生命周期。我们还发现，区块链平台对从业人员的安全感知和智能合约开发实践具有统计学上的显着影响。