We are investigating a breach of customer data impacting CoVantage Credit Union and Marquis Software Solutions.
Posted on December 02, 2025
Overview of the CoVantage Credit Union / Marquis Software Solutions Data Breach
Barnow and Associates, P.C., a leading data breach litigation law firm, is investigating a cybersecurity incident involving Marquis Software Solutions that affected multiple financial institutions, including CoVantage Credit Union. This breach may have exposed sensitive personal and financial information of approximately 160,000 CoVantage members and up to 354,289 individuals across all affected Marquis clients.
If you received a data breach notification from CoVantage Credit Union or Marquis Software Solutions, our attorneys are here to help you understand your legal options.
Contact us today to discuss your rights and explore potential claims. Fill out our contact form or call us at (312) 621-2000.
About CoVantage Credit Union and Marquis Software Solutions
CoVantage Credit Union is a member-owned financial institution headquartered in Antigo, Wisconsin, with branches across Wisconsin, Illinois, and Michigan. Marquis Software Solutions, based in Plano, Texas, provides marketing and compliance software and services to banks and credit unions nationwide.
Details of the Data Breach
The incident was discovered on August 14, 2025. The breach has been reported to the Maine Attorney General (160,000 affected at CoVantage) and the Texas Attorney General (354,289 total affected across all Marquis clients).
The investigation confirmed that the following information may have been exposed:
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names,
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addresses,
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Social Security numbers,
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financial information,
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dates of birth.
Affected institutions have begun notifying individuals.
What to Do If You Received a Data Breach Notification
If you were notified about the CoVantage Credit Union or Marquis Software Solutions data breach, you may be eligible to join a class action lawsuit. Contact Barnow and Associates, P.C. to discuss your legal rights. Complete our contact form below or reach us at (312) 621-2000.
Steps to Protect Your Personal Information
To safeguard your data after this breach, consider the following steps:
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Review the Breach Notification: Carefully read the notice and retain it for your records.
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Enroll in Free Monitoring Services: If offered, consider signing up for complimentary credit or identity monitoring.
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Update Passwords: Change passwords for online accounts, using strong, unique combinations.
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Monitor Financial Accounts: Regularly check bank and credit card statements for unauthorized transactions.
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Check Your Credit Report: Look for signs of identity theft by reviewing your credit history at AnnualCreditReport.com.
Potential Legal Outcomes for Affected Individuals
This data breach may lead to class action lawsuits due to inadequate cybersecurity measures. Affected individuals could seek compensation for:
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Costs of credit monitoring or identity theft protection
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Unauthorized charges or financial losses
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Time and effort spent addressing the breach
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Other non-financial harms
Our firm has a proven track record in data breach litigation, securing significant settlements for clients. Learn more about our past case results.
How Barnow and Associates, P.C. Can Help
Barnow and Associates, P.C. is dedicated to holding companies accountable for failing to protect consumer data. By joining a class action lawsuit, you may recover compensation for damages while advocating for stronger data security practices.
You may be eligible for recoveries related to:
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Privacy Violations: Compensation for unauthorized access to your personal information
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Mitigation Efforts: Reimbursement for time and resources spent addressing the breach
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Financial Losses: Recovery for direct costs, such as fraudulent charges
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Non-Financial Harms: Damages for emotional distress or inconvenience
Contact us today to verify your eligibility and explore your legal options. Call (312) 621-2000 or fill out our contact form.
