This white paper is a summary of the discussions conducted by the 5th Generation Mobile Promotion Forum Security Research and Study Committee. The committee extracted security issues for 5G use cases ((1) IoT, (2) Connected Vehicle, and (3) Fintech) based on 5G security standardization trends, mainly from the opinions of participating committee members. The 5GMF White Paper "Security in 5G Use Cases Version 1.0" was released in July 2020, and the results of research activities in each study item (standardization, IoT, Connected Vehicle, and Fintech) were then reflected in Version 1.1.