Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

T-Mobile USA

Disclosed Mar 10, 20201,027 affectedConfirmed

Official notice

What is known

People affected1,027 (as reported by the organization)
DisclosedMar 10, 2020
HappenedNov 26, 2019
AttackNot stated
Data exposedNot stated
SectorTelecom · US
StatusConfirmed

Sources

Official noticein.gov
Indiana Attorney General 2020 data breach report: T‐Mobile USA

Notices filed

Residents of INMar 10, 2020
Indiana AG7 people

Other breaches at T-Mobile USA

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 statedExposed names, Social Security numbers, government IDs and payment cards. Reported to the California AG.TelecomUSOct 1, 2015
History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Indiana AG), confirmed by Indiana AG. Record counts are as reported. Not legal advice.

Everything about T-Mobile USA