Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

T-Mobile USA

4 breaches1,027 affected in allTelecom

Hacking breachHacking, data exposed not stated. Reported to the Washington AG.TelecomUSJan 19, 2023Hacking breachHacking, data exposed not stated. Reported to the California AG.TelecomUSAug 24, 2021Breach, details not statedBreach notice filed with the Indiana AG, details not stated.1,027 affectedTelecomUSMar 10, 2020Breach, details not statedExposed names, Social Security numbers, government IDs and payment cards. Reported to the California AG.TelecomUSOct 1, 2015
About

Every breach here links to its sources and official notices. Across Glyph: lawsuits, incidents and outages.

data_types2026-09-25
T-Mobile USA, 2015-10-01["names","ssn","government-id","payment-card"]
source2026-09-25
T-Mobile USA, 2015-10-01https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/files/DB-Year-to-date-Report-2015.pdf
Added2026-09-25
T-Mobile USA, 2020-03-10
attack2026-09-25
T-Mobile USA, 2021-08-24hacking
disclosed2026-09-25
T-Mobile USA, 2021-08-242021-08-24
discovered2026-09-25
T-Mobile USA, 2021-08-242021-08-17
Added2026-09-25
T-Mobile USA, 2023-01-19
Added2026-09-25
T-Mobile USA, 2015-10-01
Added2026-09-25
T-Mobile USA, 2021-08-24
Added2026-09-25
T-Mobile USA