Where does the M and T Bank case file come from?

Every entry is taken from the breach report M and T Bank lodged with the Nebraska 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: M and T Bank Data Breach

This file collects the dated facts on record for the M and T Bank incident. The state report is dated April 17, 2026.

Timeline

April 17, 2026Report filed in NebraskaDate the notice was lodged with the Nebraska Attorney General.

Case facts

Filing state: Nebraska
Date reported: April 17, 2026
Receiving office: Nebraska Attorney General

Case notes

M and T Bank officially reported a security incident to the Nebraska Attorney General on April 17, 2026. The notification indicates that the financial institution is actively investigating the details surrounding the compromise of its systems.

Specific categories of personal information that may have been involved in this breach were not detailed in the public filing. Consequently, individuals who may be affected should understand that various forms of their data could potentially have been accessed.

As a prominent financial institution, M and T Bank handles a wide range of sensitive customer data. Such incidents underscore the potential risks associated with unauthorized access to systems designed to safeguard this information.

Individuals who receive direct notification from M and T Bank should closely review their financial accounts and statements for any uncharacteristic transactions or activity. It is also generally recommended to consider placing a fraud alert with credit bureaus as a precautionary measure to help protect against potential misuse of any exposed personal information.

The full scope and nature of the security incident remain under investigation by M and T Bank. Additional information may emerge as the bank's assessment progresses and further details are confirmed through official channels.

Questions about this case file

Where does the M and T Bank case file come from?: Every entry is taken from the breach report M and T Bank lodged with the Nebraska 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.

Nebraska data breaches

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Timeline

Case facts

Case notes

Questions about this case file

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