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Confirmed breach

T-Mobile USA data breach

USUnited States

T-Mobile USA (United States) notified the Washington Attorney General of a data breach on 19 January 2023. It told that state about 772,593 Washington residents; the total can be higher.

If T-Mobile USA had your data

  1. Look for T-Mobile USA’s own notice or letter: it should say what of yours was involved. Keep it.
  2. The register’s list does not say what was exposed; the notice it links to (under Sources) usually does. If T-Mobile USA has a password of yours, change it now to be safe.
  3. Expect scams that use your details: calls, texts or emails pretending to be T-Mobile USA, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

One email to confirm first. We use your address only for this alert, and one click deletes it.

Earlier breaches at T-Mobile USA

From the official registers’ and Have I Been Pwned’s full histories. A name match: check the notice to be sure it is the same company.

  1. California Attorney General · began 22 July 2021
  2. Washington Attorney General · 2,079,648 Washington residents
  3. California Attorney General · began 14 September 2015

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  3. Apollo Asset ManagementUSUnited States · NY · 28 October 2026 Social Security numbersDriver’s license numbersGovernment ID numbers+3 1.5KTexas residents
  4. DBA Tanya AlexanderUSUnited States · TX · 28 October 2026 NamesAddresses 417Texas residents
  5. DMW Retail Enterprises LLC dba Kult of Athena (KOA)USUnited States · IL · 28 October 2026 Financial account and card detailsNames 306Texas residents

Every breach in United States →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.