In a scathing report released Thursday, the Federal Trade Commission blasted the world's biggest social media companies and video-streaming platforms for their "vast surveillance" of users, "woefully inadequate" privacy controls and lax efforts to safeguard kids and teens on their platforms.

The 129-page report says that, for years, Facebook, YouTube, Twitter, ByteDance, Instagram and WhatsApp gobbled up user data and created a highly profitable commercial surveillance market at the expense of consumers' privacy and mental health.