Abstract: The European Union proposed to formulate a cyber defence policy in 2013 and issued a joint communication on the “EU Policy on Cyber Defence” at the end of 2022, continuously to deepen and implement its cyber defence policy. This paper first summarizes the main points of the joint communication from the aspects of the necessity of jointly carrying out cyber defence, the role of situational awareness in cyber defence, and the promotion of cyber defence cooperation at multiple levels. Then, the characteristics of the EU’s network defense policy are analyzed in depth from the aspects of deepening network defense policies, implementing network defense policies, and collaborating to protect key infrastructure security. Finally, three inspirations and suggestions for strengthening the security of our critical infrastructure are given.

Key words: network defense, situational awareness, APT detection, security operations center

摘要： 欧盟于2013年提出制定网络防御政策，于2022年底发布《欧盟网络防御政策》联合公报，持续深化并实施其网络防御政策.首先从联合开展网络防御的必要性、态势感知在网络防御中的作用、多层面推动网络防御合作等方面总结了欧盟联合公报的主要观点；然后从深化网络防御政策、落实网络防御政策、协同合作保护关键基础设施安全等方面深入分析了欧盟网络防御政策的特点；最后给出了加强我国关键基础设施安全的3点启示和建议.

关键词: 网络防御, 态势感知, APT检测, 安全运营中心