Where does the T-Mobile case file come from?

Every entry is taken from the breach report T-Mobile lodged with the Indiana Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: T-Mobile Data Breach

This file collects the dated facts on record for the T-Mobile incident. The state report is dated August 29, 2025. The incident itself is dated June 10, 2025.

Timeline

80 days separate the incident date from the date it was reported.

June 10, 2025Incident dateWhen the filing says the breach took place.
August 29, 2025Report filed in IndianaDate the notice was lodged with the Indiana Attorney General.

Case facts

Filing state: Indiana
Date reported: August 29, 2025
Incident date: June 10, 2025
Receiving office: Indiana Attorney General

Case notes

T-Mobile has reported a data breach to regulators in Indiana on August 29, 2025. The filing indicates an incident where personal information may have been compromised, though specific details about the nature of the breach were not provided in the public record.

The breach date is listed as June 10, 2025. T-Mobile states it is currently investigating the incident to understand its full scope. The type of personal information affected by this event has not been specified in the publicly available documents.

Customers in Indiana who may have had their information involved are expected to receive direct notification from T-Mobile. These notices typically contain more specific guidance relevant to their individual situation.

In general, individuals who receive such notifications are advised to remain vigilant. It is always a good practice to monitor financial account statements and credit reports for any suspicious activity. Be cautious of unsolicited communications, especially those asking for personal details.

Questions about this case file

Where does the T-Mobile case file come from?: Every entry is taken from the breach report T-Mobile lodged with the Indiana Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Indiana data breaches

Filing source: Indiana Attorney General

Named in the T-Mobile breach?

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Timeline

Case facts

Case notes

Questions about this case file

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