Abstract: With the development of global digital economy, multinational enterprises need to deploy their industrial chains around the world, and cross-border data flow has become the only way to promote the process of global economization. On the one hand, cross-border data practice brings huge economic dividend, on the other hand, it will cause personal privacy disclosure and national data sovereignty game and other problems. It is necessary for countries around the world, within their respective legal frameworks and international trade rules, to formulate network security systems and trade rules that are conducive to both data flow and commercial data security, personal privacy protection and national security, and to share the dividends of the rapid development of the digital economy. This paper combs the current challenges of cross-border data flow in the world, puts forward the security requirements from the perspective of network security risk, and gives the network security system in the cross-border data flow scenario from the technical point of view. Suggestions for the next stage are put forward.

Key words: Cross-border data transmission, cybersecurity risk, cybersecurity system, recommendations for work

摘要： 随着全球数字经济不断发展，跨国企业需要在全球部署其产业链，跨境数据流动成为促进全球经济化进程的必经之路。跨境数据实践一方面带来了巨大经济红利，另一方面会造成国家主权和个人隐私保护问题。需要世界各国在各自法律框架和国际贸易规则之内，制定既利于数据流动又能保障商业数据安全、个人隐私保护和国家安全的网络安全保障体系和贸易规则，共享数字经济高速发展的红利。本文梳理了当前世界范围内跨境数据流动遇到的法律法规及贸易规则挑战，从网络安全风险角度提出了安全需求，从技术角度给出了跨境数据流动场景中的网络安全保障体系，提出了下一阶段的工作建议。

关键词: 跨境数据流动, 网络安全风险, 网络安全保障体系, 工作建议