Research on Blockchain Security Risk Analysis and Coping Strategies

Abstract

With the development of blockchain, and its security issues have attracted the attention of more and more researchers. Currently, the related research is still in its infancy. This paper first reviews the basic technology and development of blockchain, summarized and introduced the blockchain structure. In terms of blockchain security, we analyze and summarizes the domestic and foreign literatures in recent years, and divide blockchain security issues into three aspects: protocol security, privacy security and system security, and the problems of blockchain security in these three aspects are analyzed. At present, protocol security research mainly focuses on the encryption mechanism of blockchain technology and smart contract vulnerabilities; Privacy security research covering mainly the potential security issues facing blockchain applications; The system security research mainly includes the classification of attack methods on blockchain. Then, we summarized the defense strategies to deal with the above security issues and analyzed the shortcomings and problems. Finally, based on the current research status of blockchain, we point out two future research directions.