With enhanced mobile broadband, massive machine-type communications, and ultra-reliable and low-latency communications, 5G is expected to create new services that have never been imagined before in a variety of sectors. In this paper, we survey recent activities related to 5G security in Japan. Specifically, we introduce “5G Security Guideline Version 1” [13], published by the Ministry of Internal Affairs and Communications (MIC) of Japan. Then, we explain several activities toward local 5G deployment in Japan and “Local 5G Security Guideline 1st Edition” [12], published by the ICT Information Sharing and Analysis Center (ICT-ISAC) Japan.

1. 1.

   Open RAN security considerations can be found in Appendix A of [13].

2. 2.

   In particular, the medical and smart factory sectors need a higher level of security than other sectors.

We sincerely appreciate the anonymous reviewers’ constructive and valuable comments on this paper.

Authors and Affiliations

1. National Institute of Advanced Industrial Science and Technology (AIST), 2-3-26, Aomi, Koto-ku, Tokyo, 135-0064, Japan

   SeongHan Shin

Corresponding author

Correspondence toSeongHan Shin.

Editors and Affiliations

1. Kookmin University, Seoul, Korea (Republic of)

   Ilsun You

2. Sangmyung University, Cheonan-si, Korea (Republic of)

   Hwankuk Kim

3. Middle East Technical University, Ankara, Türkiye

   Pelin Angin

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