1st MidAmerica Credit Union Data Breach Exposes Personal Information of Members On February 9, 2026, national consumer rights law firm Wolf Haldenstein Adler Freeman & Herz LLP announced an investigation into a data breach affecting members of 1st MidAmerica Credit Union (MACU), based in Bethalto, Illinois. The breach, which occurred in December 2024, may have resulted in the theft of sensitive personal information, including names and Social Security numbers. MACU has begun notifying impacted individuals, warning that compromised data could be circulating on the dark web. Those who received a breach notification and observed suspicious activity are advised that their information may have been exposed. Wolf Haldenstein, a firm with a history of handling consumer rights litigation, is reviewing potential legal claims on behalf of affected individuals. The firm operates offices in New York, Chicago, Nashville, and San Diego and has been recognized for its role in complex litigation. Individuals seeking further details can contact the firm directly.

1st MidAmerica Credit Union Data Breach Exposes Personal Information of Customers On February 3, 2026, national consumer rights law firm Wolf Haldenstein Adler Freeman & Herz LLP announced an investigation into a data breach affecting customers of 1st MidAmerica Credit Union (MACU), based in Bethalto, Illinois. The breach, which occurred in December 2024, may have resulted in the theft of sensitive personal information, including names and Social Security numbers. MACU has begun notifying impacted individuals, warning that compromised data could be circulating on the dark web. Those who received a breach notification and observed suspicious activity such as unauthorized account access or identity theft may have had their information exposed. Wolf Haldenstein, a firm with a history of prosecuting consumer rights cases, is reviewing potential legal claims on behalf of affected customers. The firm operates offices in New York, Chicago, Nashville, and San Diego and has been recognized for its expertise in complex litigation. Individuals seeking further details can contact the firm directly. The incident underscores ongoing risks to financial institutions and their customers from cyber threats targeting personal data.

1st MidAmerica Credit Union Customers Hit by Vendor Data Breach Affecting 130,000 A data breach at Marquis, a third-party vendor for 1st MidAmerica Credit Union, has exposed sensitive personal information belonging to over 130,000 customers. The credit union confirmed the incident, though details on the exact timeline, scope of compromised data, and the cause of the breach remain limited. The breach highlights the growing risks of supply chain attacks, where cybercriminals target vendors to gain access to larger organizations’ data. While 1st MidAmerica has not disclosed whether the breach was the result of a cyberattack, human error, or system vulnerability, the incident underscores the need for stricter vendor security oversight in financial services. No further information on potential misuse of the exposed data or remediation efforts has been released. The breach follows a pattern of recent high-profile incidents involving third-party service providers, raising concerns about the security practices of vendors handling sensitive financial information.