With the rapid development of technologies such as $5 G$, cloud computing, and big data, network virtualization technology has been widely applied, effectively improving the utilization of resources such as computing, storage, and network, as well as the flexibility of IT systems or networks, reducing system maintenance costs. However, at the same time, the complexity of network virtualization environment makes security threats more covert and diverse, and traditional security protection methods are difficult to cope with, which also brings many security risks. This article analyzes the current development status and related work of network virtualization, sorts out the security threats of network virtualization, summarizes the characteristics and architecture of network virtualization technology, and further introduces the security measures and typical use cases of network virtualization, which can be used to guide and promote network virtualization security.

With the development of 5G technology, Internet of Things (IoT) is proliferating and deeply integrated with our daily lives and industry productions. IoT applications in the 5G era generate massive connections, and this would bring about many security issues. In this paper, we first analyze security risks for massive IoT in the 5G era, then summarize related security policies and standards. Furthermore, we propose security requirements and measures for various layers, including sensor control equipment and IoT card, IoT network and transmission exchange, IoT business application and service, and IoT security management and operation. Next, we introduce the case of the cyber security monitoring platform, explain the security technology based on edge computing, and point out the related standards. Finally, we put forward suggestions on IoT security technology and standardization work, so as to promote the secure development of IoT in the 5G era.

With the development of 5G technology, Internet of Things (IoT) is highly developing and deeply integrated with social life and industry productions, which brings about many security issues. In this paper, we first analyze the security risks for IoT in the 5G era, then summarize related security policies and standards. Furthermore, we propose security requirements and measures in aspects of sensor control equipment and IoT card, IoT network and transmission exchange, IoT business application and service, and IoT security management and operation. Finally, we put forward suggestions for promoting IoT security technology and the standardization work in the 5G era.

5G applications face security risks due to the new technology used and the performance requirements of the specific application scenario. This paper analyzes the security requirements and presents hierarchical solutions for stakeholders to build secure 5G applications. First, we summarize the technical characteristics and typical usage scenarios of 5G. Then, we analyze the security and privacy risks faced by 5G applications and related security standards and research work. Next, we give the system reference architecture and overall security and privacy solutions for 5G applications. Based on the three major application scenarios of eMBB, uRLLC, and mMTC, we also provide specific suggestions for coping with security and privacy risks. Finally, we present a use case of industrial terminal access control and make conclusions of this paper.