1st MidAmerica Credit Union

The organisation operates under the name 1st MidAmerica Credit Union and is also referred to by the acronym MACU.
Its headquarters is located in the United States of America.
As indicated by its name, it is a credit union, a member‑owned financial cooperative.
Credit unions generally offer deposit accounts, loans, and other financial services to their members.
The available sources do not disclose specific metrics such as membership count, asset size, or geographic reach for this institution.

On August 14, 2025, 1st MidAmerica Credit Union learned that its vendor, Marquis Software Solutions, detected suspicious activity on its network.
The vendor’s analysis determined that an unauthorized third party had gained access to the network.
This unauthorized access may have led to the acquisition of files containing customers’ personal information.
The specific personal data that could have been compromised includes names and Social Security numbers.
The sources do not provide further details on the number of affected records or the duration of the exposure.

In response to the incident, the law firm Edelson Lechtzin LLP is investigating potential data privacy claims on behalf of affected individuals.
The investigation seeks to assess whether the credit union or its vendor failed to adequately protect the compromised data.
Coverage of the breach was disseminated through a press release distributed by PR Newswire.
An additional report on the incident was published by the website Lelezard.
These two references constitute the publicly available sources cited for the event.