TikTok

TikTok is the worst social media platform for privacy, collecting device identifiers, keystroke patterns, clipboard contents, and biometric face data. The app's algorithm knows your preferences better than your therapist, and a 2023 study revealed it tracked 73 data points per user daily—far more than the average rival. This hoarding of metadata, combined with ties to Chinese parent ByteDance, raises national security concerns and outpaces #2 Facebook in the sheer volume of sensitive personal information harvested without explicit consent.