694Mainstreet Credit Union Discloses 2026 Data Breach Filing

694Mainstreet Credit Union in Indiana reported a data breach to regulators on May 4, 2026, following an incident on January 12, 2026. This disclosure indicates that some personal information held by the credit union may have been exposed, and an investigation is currently under monitoring.

State: Indiana
Breach date: January 12, 2026
Reported: May 4, 2026

What may have been exposed

Full Name
Social Security Number
Financial Account Number
Date of Birth
Routing Number
Credit Score Information
Transaction History
Mailing Address

694Mainstreet Credit Union, operating in Indiana, has officially filed notice of a data breach. The incident, which occurred on January 12, 2026, led to a public disclosure with regulators on May 4, 2026. The specific nature of how the breach occurred has not been detailed in public records at this time.

While the exact categories of personal information involved have not been specified, the filing confirms that some of your data was implicated. This type of event typically prompts organizations to notify individuals whose information may have been compromised, enabling them to take precautions.

Following the breach, 694Mainstreet Credit Union indicates that the investigation into the incident is currently under monitoring. Affected individuals should be attentive to any official communications directly from the credit union regarding this matter.

To safeguard your personal information, it is advisable to regularly review financial statements and credit reports for any unauthorized activity. Consider changing passwords for online accounts, especially those that might share credentials, and remain vigilant against phishing attempts or suspicious communications that may try to exploit this situation.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

Freeze your credit
Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.
Watch your financial accounts
Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.
Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Source: Indiana Attorney General filing

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