By Top Class Actions  |  February 9, 2026

Category: Data Breach
Password security breach warning with red asterisk box, cybersecurity alert, lock icons, and critical vulnerability signals in digital system
(Photo Credit: Summit Art Creations/Shutterstock)

CoVantage Credit Union class action overview:

  • Who: Two consumers filed a class action lawsuit against CoVantage Credit Union, University Credit Union and Marquis Software Solutions Inc.
  • Why: The plaintiffs claim the defendants failed to safeguard the personally identifying information (PII) of customers of Marquis Software’s financial institution clients.
  • Where: The data breach class action lawsuit was filed in Texas federal court.

Customers of Marquis Software’s financial institution clients have filed a class action lawsuit against the company and two credit unions over a data breach that allegedly exposed their personally identifying information.

Plaintiffs Kathy Yunk and Diane Dzilvelis allege that Marquis Software, CoVantage Credit Union and University Credit Union failed to properly secure and safeguard the PII of customers of Marquis Software’s financial institution clients.

According to the class action lawsuit, the CoVantage Credit Union data breach exposed customers’ names, addresses, phone numbers, Social Security numbers, financial account information, taxpayer identification numbers and dates of birth.

“Defendants owed a duty to plaintiffs and class members to implement and maintain reasonable and adequate security measures to secure, protect and safeguard their PII against unauthorized access and disclosure,” the CoVantage Credit Union class action lawsuit says.

Marquis Software allegedly delayed data breach notification

Yunk and Dzilvelis allege Marquis Software waited more than three months to announce the CoVantage Credit Union data breach and begin notifying affected individuals.

The defendants’ alleged failure to promptly notify affected individuals “virtually ensured” that unauthorized third parties who exploited the security lapses could monetize, misuse or disseminate the PII, the CoVantage Credit Union class action lawsuit claims.

“As a result, plaintiffs and class members will suffer indefinitely from the substantial and concrete risk that their identities will be (or already have been) stolen and misappropriated,” the lawsuit states.

Yunk and Dzilvelis claim the defendants are guilty of negligence, breach of implied contract and unjust enrichment and of violating the California Unfair Competition Law.

The plaintiffs demand a jury trial and request declaratory and injunctive relief and an award of monetary, statutory and punitive damages for themselves and all class members.

Meanwhile, Via Credit Union is facing a class action lawsuit alleging it failed to adequately protect the personal information of more than 60,000 customers during a data breach discovered earlier this year.

Have you been affected by the CoVantage Credit Union data breach? Let us know in the comments.

The plaintiffs are represented by Bruce W. Steckler of Steckler Wayne & Love PLLC and Ben Barnow and Anthony L. Parkhill of Barnow and Associates P.C.

The CoVantage Credit Union class action lawsuit is Yunk, et al. v. CoVantage Credit Union, et al., Case No. 4:26-cv-00108, in the U.S. District Court for the Eastern District of Texas.


Don’t Miss Out!

Check out our list of Class Action Lawsuits and Class Action Settlements you may qualify to join!


Read About More Class Action Lawsuits & Class Action Settlements:

We tell you about cash you can claim EVERY WEEK! Sign up for our free newsletter.

Leave a Reply

Your email address will not be published. By submitting your comment and contact information, you agree to receive marketing emails from Top Class Actions regarding this and/or similar lawsuits or settlements, and/or to be contacted by an attorney or law firm to discuss the details of your potential case at no charge to you if you qualify. Required fields are marked *

Please note: Top Class Actions is not a settlement administrator or law firm. Top Class Actions is a legal news source that reports on class action lawsuits, class action settlements, drug injury lawsuits and product liability lawsuits. Top Class Actions does not process claims and we cannot advise you on the status of any class action settlement claim. You must contact the settlement administrator or your attorney for any updates regarding your claim status, claim form or questions about when payments are expected to be mailed out.