T-Mobile USA Data Breaches: History and Settlements

Last updated Oct 20, 2026 · 1 data breach in official filings

1 data breach involving T-Mobile USA appears in official filings with US state attorneys general, the U.S. Department of Health and Human Services or the SEC. Each breach page lists the information involved, the agencies it was filed with and links to every official source.

Data breaches

T-Mobile USA (August 2021) First filed Aug 24, 2021 · Filed with Washington AG, California AG
At least 2,079,648 people
- Social Security number
- Driver's license
- Date of birth
- +1 more

Sources

The facts for each breach come from the official filings listed in the Sources section of its page.

Names used in filings: T-Mobile USA; T-Mobile USA, Inc..

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