SAN FRANCISCO—A California college student has accused popular video-sharing app TikTok in a class-action lawsuit of transferring private user data to servers in China, despite the company’s assurances that it does not store personal data there.
The allegations may deepen legal troubles in the United States for TikTok, which is owned by Beijing ByteDance Technology but operates entirely outside of China and has developed an especially devoted fan base among U.S. teenagers.
