Where does the St. Mary's Credit Union case file come from?

Every entry is taken from the breach report St. Mary's Credit Union lodged with the Massachusetts 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: St. Mary's Credit Union Data Breach

This file collects the dated facts on record for the St. Mary's Credit Union incident. The state report is dated January 16, 2026.

Timeline

January 16, 2026Report filed in MassachusettsDate the notice was lodged with the Massachusetts Attorney General.

Case facts

Filing state: Massachusetts
Date reported: January 16, 2026
Receiving office: Massachusetts Attorney General

Case notes

St. Mary's Credit Union officially reported a data security incident to regulators in Massachusetts on January 16, 2026. This public filing indicates that an event occurred which potentially compromised personal information held by the credit union. The specific date when the breach itself took place remains unknown, and an investigation into the incident is currently underway.

According to the official filing, the exact types of personal information involved in this incident have not been specified. St. Mary's Credit Union, as a financial institution, routinely handles a wide range of sensitive data for its members. The ongoing investigation is expected to clarify the full scope and nature of the exposed information.

For individuals who receive a direct notification from St. Mary's Credit Union regarding this incident, it is important to review that communication carefully for specific instructions and details. As a general precaution, it is advisable to regularly monitor financial accounts and credit reports for any signs of unusual or unauthorized activity.

Consider placing a fraud alert or security freeze on your credit files with the three major credit bureaus (Equifax, Experian, and TransUnion) to help prevent new accounts from being opened in your name. Additionally, remain vigilant for potential phishing attempts via email, phone calls, or text messages that might try to exploit concerns related to this security incident.

This report from St. Mary's Credit Union aligns with regulatory requirements for organizations to disclose security incidents involving consumer data. Such disclosures provide official documentation for affected individuals and serve as public records for researchers tracking data security trends.

Questions about this case file

Where does the St. Mary's Credit Union case file come from?: Every entry is taken from the breach report St. Mary's Credit Union lodged with the Massachusetts 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.

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Timeline

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