新媒介的发展呈现出技术的“杰纳斯脸”：在带来便利与繁荣的同时，也暗藏风险和危机。一定程度上，新媒介技术的演变正推进着新媒介发展为一种宏观语境。在这样的语境中，“安全”不断进入各国的政策和媒体议程，作为安全问题中一个重要的类别，国家安全问题也在此语境中表现出了新的类型与特征。由于安全话语性质的凸显，国家安全问题在新媒介语境下不仅是一个兼具传统安全与非传统安全的问题，也是一个经由新媒介参与的话语过程和总体实践，交织发生在政治、军事、经济、文化、社会、科技、信息等总体国家安全层面，呈现出泛化、加速、杂糅的特征。这些问题背后涉及建构主义安全观中一个重要的概念机制“安全化”，本文认为国家安全问题在新媒介构建的内外环境中经历了原生与诱发两种安全化触发过程，在此过程中各类交织的安全问题将不同的主体、多元的行动者整合到了新媒介的技术逻辑之下，形成了从主体间话语性到场域间风险性的影响机制。理论与现实地看，对总体国家安全问题的语境构成、类型特征、过程机制的理解，可以为整体网络空间安全治理体系的构建提供一个总体的前因性参照。

The development of emerging media presents the “Janus face” of technology: it brings convenience and prosperity, but also implies risks and crises. To some extent, the evolution of emerging media forms is promoting the development of emerging media to a macro context. In such a context, “security” is constantly on the agenda of national policies and media. As an important category of security issues,national security issues also show new types and characteristics in the new context. Due to the prominent nature of security discourse, national security issues in the context of emerging media are not only a problem with both traditional and non-traditional security, but also a discourse process and micro practice participated by emerging media, interwoven in politics, military, economy, culture, society, science and technology information and other aspects of holistic national security and show the characteristics of generalization, acceleration, hybridization and cross domain. Behind the emergence of these issues, it involves an important conceptual mechanism “securitization” in the security concept of constructivism. This paper holds that holistic national security issues have experienced two kinds of securitization process in the internal and external environment of emerging media construction. In this process, various interwoven security issues integrate different subjects and multiple actors into the technology of emerging media. In the logic of technology, a new type of risk with discursivity between subjects and derivative between fields comes into being. Theoretically and practically, the understanding of the context composition, type characteristics and process mechanism of holistic national security issues can provide a general antecedent reference for the construction of the overall cyberspace security governance system.