关键词: 关键信息基础设施, 数据空间, 安全, 可信数据空间, 行业分析

Abstract: Against the backdrop of the deepening development of the digital economy, researching the security of trustworthy data spaces is of great significance for enhancing the data protection level of critical information infrastructure and promoting the highquality development of the datafactor market. This study systematically analyzes the development status of data spaces in the United States, the European Union and Japan. Building on international experience, it focuses on industrial sectors, examining the development landscape and existing challenges of data space security in each field. The study proposes policy recommendations, including strengthening the legal and regulatory framework for data spaces, advancing breakthroughs in core technologies, fostering diverse application scenarios and market ecosystems, optimizing the supply structure, and enhancing international cooperation. These proposals aim to ensure the secure circulation of data as a production factor and to promote the highquality development of the data factor market.

Key words: critical information infrastructure, data space, security, trusted data space, industry analysis