Washington State Sues T-Mobile Over 2021 Data Breach

The lawsuit alleges T-Mobile failed to address known cybersecurity vulnerabilities, exposing sensitive data of 79 million people nationwide.

Washington Attorney General Bob Ferguson filed a lawsuit accusing T-Mobile of neglecting known security flaws that led to the 2021 data breach.
The breach exposed personal information, including Social Security numbers, phone numbers, and addresses, of over 79 million individuals, including 2 million in Washington state.
The lawsuit claims T-Mobile misled customers about its cybersecurity efforts and failed to notify affected individuals comprehensively and promptly.
Hackers gained access to T-Mobile's systems in March 2021, with the breach going undetected until August, when data appeared for sale on the dark web.
The legal action seeks restitution for affected Washington residents, penalties for consumer protection violations, and mandatory improvements to T-Mobile's cybersecurity practices.