MemberSource Credit Union Reports Data Incident, Investigation Ongoing

MemberSource Credit Union, operating in Montana, has publicly acknowledged a data incident that took place on June 3, 2025. The credit union submitted a formal filing regarding this event on May 5, 2026, confirming the occurrence of a security breach involving its systems.

While the specific types of data compromised in this incident have not been detailed in public records, it has been reported that personal information may have been affected. MemberSource Credit Union has stated that the incident is currently under investigation to determine the full extent and nature of the breach.

Individuals who receive a direct notification from MemberSource Credit Union regarding this event should carefully review the information provided. These notices typically offer details specific to their situation and outline steps the organization is taking.

As a general precaution following any data incident, it is advisable to remain vigilant against unusual communications or unauthorized activity. Regularly review account statements and credit reports for any discrepancies.

Consider placing a fraud alert or security freeze on your credit files as appropriate. These measures can help protect against potential misuse of your personal information, regardless of the specific data types involved.