https://www.sfchronicle.com/business/article/Teen-lip-sync-app-Musical-ly-now-called-TikTok-13650571.php

The operator of a video-sharing app popular with teenagers agreed to pay $5.7 million to settle federal allegations it illegally collected personal information from children .

The Federal Trade Commission said the Wednesday penalty against lip-syncing app Musical.ly, now known as TikTok, is the largest ever obtained in a children’s privacy case.