(Photo Credit: BigTunaOnline/Shutterstock) TikTok U.S. user data privacy concerns letter overview: Who: TikTok wrote a letter to nine Republican senators to address privacy concerns related to allegations that company workers inside China are able to access the data of U.S. users. Why: The Republican senators made an inquiry into TikTok’s ability to access the data of its U.S. users following a BuzzFeed article that reported that leaked audio showed TikTok workers in China had repeatedly accessed the data of U.S. users. Where: TikTok is a video hosting service owned by the Chinese company ByteDance and used by individuals in the…