Every day, every hour, every waking minute, TikTok is hoovering up seemingly infinite bits of information about its users—their tastes, hobbies, political views, sexual preferences, their facial structure, the sound of their voice. Ostensibly, all this is meant to provide a better product. It should also be noted that this information can be used for spying, influencing millions of users—even waging war. Every time we swipe for the next video, every time we post videos of our own, we are helping the world’s most sophisticated police state learn more about us.