Data Breach WatchDBW

Banking

High

investigation open

Updated about 1 month ago

1st MidAmerica Credit Union Data Breach

▼ Key takeaways

•Reports suggest a potential breach involving 1st MidAmerica Credit Union.
•Discovered on January 30, 2026.
•Possible data exposed: Name, SSN, Date of Birth, Address, Government ID, Financial Account Information, Credit Card Number.
•Affects individuals in: Maine, Indiana, New Hampshire, Texas, Vermont, Illinois, Missouri.
•Confirmation level: Confirmed by regulators.

Breach confirmed

The 1st MidAmerica Credit Union breach is confirmed. If you may be affected, add your details below and we will take it from there.

Detailed summary

In 2025-2026, 1st MidAmerica Credit Union experienced a data breach stemming from unauthorized access to the network of its third-party vendor, Marquis Software Solutions, on or around August 14, 2025. The credit union became aware of the incident on August 14, 2025. The breach did not involve the credit union's internal systems.

The breach affected 131,070 individuals. Exposed data types include name, Social Security number, date of birth, address, government IDs, and financial account information such as account and credit/debit card numbers. While one report mentioned medical information, this is not widely confirmed across sources. States confirmed to be affected include Maine, Indiana, New Hampshire, Texas, and Vermont. Notifications to consumers began on January 22, 2026, and regulators in affected states were subsequently notified.

Details about data breaches can emerge over time, and notification processes may experience delays.

Data possibly involved

Name
SSN
Can be used to open fraudulent accounts and file false tax returns
Date of Birth
Often used in combination with other data for identity theft
Address
Could be combined with other data for identity theft
Government ID
Financial Account Information
Credit Card Number
May result in unauthorized charges on your accounts

Company Response Timeline

Response Grade

Notified consumers within 91–180 days

Breach Occurred

Aug 14, 2025

Company Discovered

Aug 14, 2025

Regulator Notified

Jan 30, 2026

Consumers Notified

Jan 22, 2026

0 days to discover

161 days to notify consumers

Breach Verification Status

Reports Only

Complete

Initial dark web reports of potential breach

Company Confirmed

Complete

Company has acknowledged the breach

Regulator Confirmed

Current

Confirmed by regulatory authorities

Note: Breach verification can take time. Information may evolve as more details become available from companies and regulators.

Case Status:

Investigation Open

We're actively investigating this case and seeking affected individuals.

Were you affected? Submit your information below.

Were You Affected By This Breach?

If you are a customer or have received a data breach notification, you may submit your information as part of our ongoing investigation. Submitting your information is free and does not obligate you.

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Check Your Risk Level

Answer a few questions to understand how this breach might affect you

Do you use 1st MidAmerica Credit Union?

Yes

What state are you in?

What should I do?

Change your passwords

Update passwords for the affected service and any accounts using the same password

Enable two-factor authentication

Add an extra layer of security to your accounts

Monitor your accounts

Watch for suspicious activity on your financial and online accounts

Watch for phishing attempts

Be cautious of emails or messages claiming to be from the affected company

Consider a credit freeze

Prevent unauthorized access to your credit report

Scan your email for other exposures

Check whether this address shows up in other known breaches. Free, no account.

Get your info off data-broker sites

Data Shield files removal requests with every broker that accepts an authorized agent, and gives you the exact link or letter for the brokers that only accept requests from you.

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