Summary On February 1, 2024, Ms. Sascha Hannig Nuñez, a doctoral student in the Graduate School of Law, and Professor Maiko Ichihara of the Graduate School of Law co-authored an article, “TikTok's Impact on Security and the Current State of TikTok Regulations: Cases of the United States and Europe,” which was published in the Journal of Law and Information System. In this paper, Ms. Hannig and Professor Ichihara first discussed the role of media and social media platforms in shaping the narrative orchestrated by the Chinese government. They then examined the concerns raised by TikTok from four perspectives: national security concerns, input biases in algorithms and AI, dissemination of misinformation particularly among youth, and democratic considerations. Subsequently, they analyzed the regulations imposed on TikTok in Europe and the United States and concluded by providing recommendations for future actions to be taken in Japan. They emphasized the importance of measures that protect national security and children's rights while eliminating arbitrariness. They highlighted the necessity of conducting analyses of social media platforms, considering the influence of Chinese domestic laws, and implementing legal frameworks to protect privacy rights.