MemberSource Credit Union Data Breach: Your Data Exposed

MemberSource Credit Union, operating in Montana, formally reported a data security incident on May 5, 2026, alerting members to a breach of its digital network infrastructure. This incident, which the credit union states occurred on June 3, 2025, indicates that highly sensitive personal and financial data entrusted to MemberSource Credit Union may have been accessed by unauthorized parties. The credit union is currently monitoring the situation.

The breach at MemberSource Credit Union exposed several critical categories of personal information. This includes your Full Name, Social Security Number, Financial Account Number, Date of Birth, Routing Number, Credit Score Information, Transaction History, and Mailing Address. The compromise of these details creates a significant risk for identity theft, financial fraud, and unauthorized account access, potentially leading to substantial financial and personal disruption for affected members.

Financial institutions like MemberSource Credit Union are held to strict regulatory standards, including the Gramm-Leach-Bliley Act and state data protection laws in Montana, which mandate robust security measures to protect member data. The occurrence of a data breach raises serious questions about whether these essential safeguards were adequately maintained. When such an incident occurs, it often points to a potential failure in the credit union's duty to protect your confidential information.

If you have received an official data breach notification letter from MemberSource Credit Union, it serves as confirmation that your private information has been compromised. This notice is a critical step, establishing the basis for you to explore your legal options. Our team offers a free, no-obligation case review to help you understand your rights and determine if you are eligible to pursue a claim without any upfront costs.