DisclosureLens
UnknownTelecom & MediaInformationCustomer Data InvolvedPIIHighContained

T-MOBILE USA, INC.

bd_776dc7fa5e822ff5 · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Nov 29, 2021

To disclose

—

Affected

116,079state residents only

Linked

3 filings

Confidence

68%
Full breach record for T-MOBILE USA, INC. →22 incidents on file

T-Mobile USA submitted a supplemental notice to the New Hampshire Attorney General on November 23, 2021, regarding a security event affecting New Hampshire residents. The company reported that it detected and shut down the event and sent individual notices to 116,079 residents between August 18 and October 24, 2021. The investigation was stated to be complete.

Leak gap clock⏱ Leak >30d
⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Nov 29, 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 3 about the same incident.View merged incident
A leak claim by arvinclub about this victim predates this filing by 81 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Regulatory filings (1) · sorted by filing gap

Filing propagation · 2 filings · 2 states

View merged incident ↗
New Hampshire State AGNov 29 · first · this page
Massachusetts State AG+99d

Pattern: first filing Nov 29 (NH), last Mar 8 (MA) — a 99-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.