针对网络空间内容安全中各种不良信息（包括恐怖、谣言、诈骗、暴力、色情和颠覆等）的治理需求，本文综述了国外网络空间不良信息的管理情况。首先，对国外网络空间不良信息进行了定义和分类；其次，梳理了国外网络空间不良信息监管的法律法规，阐述了一些国家在立法中普遍采取的做法；再次，从网络数据监听、网络不良信息过滤与舆论对抗入手，着重介绍了世界主要国家对网络不良信息的治理技术与手段；最后，总结了近年来全球范围内部分互联网不良信息治理专项行动等。

In view of the management needs of all kinds of harmful information (including terrorism, rumor, fraud, violence, pornography, and subversion) in cyberspace, this paper summarizes the management situation of harmful information around the world. The paper first introduces the definition and classification of harmful information. It then proposes laws and regulations for the supervision of harmful information, and expounds the regulations that countries generally adopt in their legislative practice. Next, starting from network data monitoring, information filtering, and public opinion against network management, this paper introduces the technology and means of network governance over harmful information. Finally, this paper describes recent global internal Internet governance special action, and so forth.