TikTok Faces Latest Lawsuit Over ‘In-App Browser’ Data Tracking

TikTok Inc. illegally tracks user activity on third-party websites through its integrated web browser, in violation of the Federal Wiretap Act, according to a proposed class action filed in Illinois federal court that echoes earlier claims from consumers.

When a user clicks on a link in TikTok, the app opens the page via an “in-app browser” that uses code to track interactions with the website in an effort to increase advertising profit, said the lawsuit filed Friday in the US District Court for the Northern District of Illinois.

The lawsuit is at least the sixth of its kind to be ...