DisclosureLens
UnknownGovernment IDCritical

T-MOBILE USA, INC.

bd_6e3dba4ecc816601 · schema v1 · pii pii-v1

Severity

Critical

Discovered

—

Filed

Aug 26, 2021

To disclose

—

Affected

1,044,774state residents only

Linked

7 filings

Confidence

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

T-Mobile USA reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2021-08-26. 1,044,774 Massachusetts residents were affected. The report records the breach type as electronic.

Massachusetts clock✓ MA credit monitoring due
⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Aug 26, 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 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Show 2 more filings ↓up to 7d gap

Filing propagation · 7 filings · 7 states

View merged incident ↗
New Hampshire State AGAug 19 · first
Delaware State AGAug 19 · first
Washington State AG+5d
California State AG+6d
Massachusetts State AG+7d · this page
Oregon State AG+8d
South Carolina State AG+12d

Pattern: first filing Aug 19 (NH), last Aug 31 (SC) — a 12-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.