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Latest / California / August 2021

T-Mobile USA

T-Mobile USA notified California AG on Aug 25, 2021 of a data breach, which occurred on Jul 22, 2021. Data exposed: Social Security number, Financial / bank account, Usernames / passwords, Phone number, Postal address.

Organization
T-Mobile USA
Source
California AG · source record
Date reported
Aug 25, 2021
Date(s) of breach
Thursday, July 22, 2021
Residents affected
Not published by this source
Data exposed
Social Security number Financial / bank account Usernames / passwords Phone number Postal address
Notice letter
Sample notice (PDF)
First seen by BreachTally
2026-10-30 16:05 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

Other filings by T-Mobile USA

OrganizationSourceStateReportedResidents affectedData exposed
T-Mobile USA, Inc. California AG CA Oct 1, 2015 Not published Social Security numberPassport numberFinancial / bank accountDate of birth+3
First seen by BreachTally at 16:05 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the data types and the letter. Start a 14-day free trial.

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.