DisclosureLens
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T-MOBILE USA, INC.

bd_4a61518276e9f6b7 · schema v1 · pii pii-v2

Severity

Low

Discovered

Aug 17, 2021

Filed

Jan 1, 2021

To disclose

—

Affected

Withheld by the regulator

Linked

2 filings

Confidence

95%
Full breach record for T-MOBILE USA, INC. →22 incidents on file

T-MOBILE filed a data-breach notice with the Illinois Attorney General during 2021 (case 21-339). The register records the breach as discovered on August 17, 2021. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.

Incident timeline — partial

? — ?

Breach window unknown

Jan 1, 2021

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.