TikTok class action claims data breach exposed info of 2.4B users

TikTok class action lawsuit overview:

• Who: Plaintiff Sean Mortazi filed a class action lawsuit against TikTok Inc.
• Why: Mortazi claims TikTok failed to protect the private information of 2.4 billion users during a data breach in June 2026.
• Where: The TikTok class action lawsuit was filed in California federal court.

A new class action lawsuit alleges TikTok failed to protect the private information of billions of users during a data breach in June 2026.

Plaintiff Sean Mortazi claims TikTok left the private information of 2.4 billion users — including their names, usernames, email addresses, phone numbers, dates of birth, gender information, language information and location information — vulnerable to a data breach that allegedly occurred in June 2026.

“Data breaches force victims to maintain constant vigilance over the misuse of their information,” the TikTok class action lawsuit says. “To lose control over personal information by no fault of your own can be devastating.” 

The TikTok data breach reportedly involved a hacker group posting the data, which included usernames, email addresses and phone numbers, online. 

Mortazi wants to represent a nationwide class and California subclass of individuals whose private information was compromised in the TikTok data breach reported on or about June 11, 2026.

TikTok allegedly failed to implement adequate security measures

Mortazi argues TikTok failed to implement adequate data security measures despite knowing that it was at high risk of being targeted by cybercriminals.

“[TikTok] was well aware that the private information it collects, stores, uses and derives benefits from is highly sensitive and of significant value to those who seek to use it for nefarious purposes,” the TikTok class action lawsuit says.

Mortazi argues that TikTok could have, among other measures, implemented strict multi-factor authentication for employees and vendors, limited access to sensitive data, required step-up authentication for access to sensitive data and monitored its network for logins from unrecognized locations.

Mortazi claims TikTok is guilty of negligence, negligence per se, breach of implied contract, invasion of privacy, unjust enrichment and violations of California’s Unfair Competition Law, Consumer Privacy Act and Customer Records Act.

The plaintiff demands a jury trial and requests declaratory and injunctive relief and an award of actual, compensatory, statutory and punitive damages for himself and all class members.

Amid a wave of social media addiction lawsuits, Florida Attorney General James Uthmeier filed a lawsuit accusing TikTok of violating state law by allowing underage users to access the platform and misleading consumers about the content available to minors.

What do you think of the claims made in this class action lawsuit against TikTok? Let us know in the comments.

The plaintiff is represented by Tina Wolfson, Theodore W. Maya, Alyssa Brown and Bradley K. King of Ahdoot & Wolfson P.C.

The TikTok class action lawsuit is Mortazi v. TikTok Inc., Case No. 2:26-cv-06371, in the U.S. District Court for the Central District of California.

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