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MemberSource Credit Union data breach investigation

MemberSource Credit Union recently filed notice with the Texas Attorney General regarding a data breach that occurred in June 2025, but was not reported until May 2026. This report confirms that personal information was exposed, leaving affected individuals in Texas questioning the security of their data and the timing of the notification.

Filed
May 11, 2026
Regulator
TX AG
People affected
Not stated
File status
Investigation Open

What the filing confirms

  • MemberSource Credit Union reported the incident to the TX Attorney General.

Still unknown

  • Which categories of personal information were taken. The filing does not list them.
  • How many people were affected. The filing does not give a number.
  • What caused the incident beyond the description in the filing.
  • How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.
Read the filing at the source

Investigation notes

MemberSource Credit Union has formally reported a data security incident to the Texas Attorney General, indicating that individuals' personal information was compromised. The filing, dated May 11, 2026, states that the breach itself took place nearly a year earlier, on June 3, 2025. This significant delay between the breach discovery and official notification raises questions about the credit union's data security protocols and its compliance with notification requirements.

The official filing does not specify the exact type of data that was exposed, nor does it detail the nature of the breach incident. What is confirmed is that personal information belonging to individuals was affected. For those who receive a notification letter from MemberSource Credit Union, it is crucial to understand what this means for your personal privacy and potential risks.

Upon receiving a breach notification, it is generally advisable to take immediate steps to protect yourself. This includes carefully reviewing the letter for any specific guidance offered, monitoring your financial accounts and credit reports for suspicious activity, and considering placing a fraud alert or security freeze on your credit. Changing passwords for online accounts, especially any linked to the credit union, is also a wise precaution.

Our firm views data breaches as an open investigation into a company’s conduct and safeguards. When an organization holds personal information, it assumes a legal responsibility to protect that data from unauthorized access. The delay in notification in this particular incident is one aspect that may be subject to closer scrutiny. Individuals whose data was exposed may have legal options to explore.

If you have received a notification from MemberSource Credit Union concerning this data breach, you may be eligible to pursue legal action. We offer a free, no-obligation case review to help you understand what happened and whether you have a claim. Speaking with our team does not create an attorney-client relationship.

What our attorneys examine

A cyberattack does not excuse a company from protecting the information it holds. We look at whether MemberSource Credit Union used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in TX.

MemberSource Credit Union data breach questions

Is the MemberSource Credit Union data breach letter legit or a scam?
A notice from MemberSource Credit Union in the mail matches the breach MemberSource Credit Union reported to the TX Attorney General on May 11, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact MemberSource Credit Union through a phone number or website you find yourself.
Did MemberSource Credit Union offer free credit monitoring?
Check your letter from MemberSource Credit Union. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Using the free service won't stop you from joining a lawsuit or settlement later.
Is there a MemberSource Credit Union data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against MemberSource Credit Union. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
What should I do after getting the MemberSource Credit Union data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
Where can I see the official MemberSource Credit Union breach notice?
MemberSource Credit Union's report is published by the TX Attorney General: https://oag.my.site.com/datasecuritybreachreport/apex/DataSecurityReportsPage#BR-0005026 Compare it with the letter you received to confirm the dates and details match.
Do I need a MemberSource Credit Union data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.
Can I sue MemberSource Credit Union over the data breach?
It depends on what was exposed, the law in TX and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
How much could a MemberSource Credit Union data breach settlement or claim be worth?
There is no set amount, and no MemberSource Credit Union settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. Keep receipts and records; they're what damages claims are built on.

Other open files in TX

Attorney advertising. An incident file reflects a public regulator filing and our review of it; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.