Recently, President Trump threatened to ban the Chinese-owned social media platform TikTok, saying the popular short-form video app presents a security threat.

Trump hasn’t detailed his security concerns about the app, which is owned by Chinese company ByteDance, and some users say it doesn’t collect more personal information than many other mobile apps. But some privacy advocates are worried about a 2017 national intelligence law that requires all Chinese organizations and citizens to assist with state intelligence investigations.