https://www.vox.com/recode/2020/8/11/21363092/why-is-tiktok-national-security-threat-wechat-trump-ban

What we know — and don’t know — about the alleged national security concerns surrounding TikTok and WeChat.

Last week, President Trump seriously escalated his threats toward the social media app TikTok, which he has accused of posing a threat to national security. If the Chinese-owned app doesn’t sell to an American company in 45 days, it will effectively be banned in the US.