1st MidAmerica Credit Union Data Breach Lawsuit Investigation
Published: February 3, 2026

1st MidAmerica Credit Union Data Breach: What You Need to Know

1st MidAmerica Credit Union has reported a data breach that potentially compromised the personal information of 535 individuals. The breach was linked to a vendor's cybersecurity incident detected on August 14, 2025.

Timeline of Events

The breach was initially detected on August 14, 2025, when Marquis Software Solutions, a vendor for 1st MidAmerica Credit Union, identified suspicious activity on its network. By October 27, 2025, a list of potentially accessed data was provided to 1st MidAmerica Credit Union. Notification to affected individuals began on January 22, 2026.

Information Exposed

Maine Residents

  • First and Last Names
  • Social Security Numbers

Texas Residents

  • Date of Birth
  • Financial Information (e.g., account number)
  • Name of individual
  • Social Security Number Information
  • Credit or debit card number

What Affected Individuals Should Do

Affected individuals are advised to enroll in the complimentary 24-month membership of Epiq Privacy Solutions ID for identity protection and monitoring. Additionally, it is recommended to regularly review account statements and credit history for any unauthorized activity. Report any suspicious activity to local law enforcement and the Massachusetts Attorney General if necessary.

Company Response

1st MidAmerica Credit Union, through Marquis Software Solutions, has taken action to secure their network and is offering identity protection services to affected individuals. They have emphasized their commitment to safeguarding the information in their care.

FAQ

What is the source of the breach?

The breach originated from a cybersecurity incident at Marquis Software Solutions, a vendor for 1st MidAmerica Credit Union.

How many individuals were affected?

A total of 535 individuals were affected by this data breach.

What services are being offered to affected individuals?

Affected individuals are offered a complimentary 24-month membership with Epiq Privacy Solutions ID for identity monitoring and protection.

Official Notice Documents

The following are official data breach notification documents filed with state attorneys general.

File a Claim