Where does the Mainstreet Credit Union case file come from?

Every entry is taken from the breach report Mainstreet Credit Union lodged with the Indiana Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: Mainstreet Credit Union Data Breach

This file collects the dated facts on record for the Mainstreet Credit Union incident. The state report is dated May 4, 2026. The incident itself is dated January 12, 2026.

Timeline

112 days separate the incident date from the date it was reported.

January 12, 2026Incident dateWhen the filing says the breach took place.
May 4, 2026Report filed in IndianaDate the notice was lodged with the Indiana Attorney General.

Case facts

Filing state: Indiana
Date reported: May 4, 2026
Incident date: January 12, 2026
Receiving office: Indiana Attorney General

Case notes

Mainstreet Credit Union, located in Indiana, has documented a data security incident that originated on January 12, 2026. This disclosure is based on public filings made with regulatory bodies, noting a breach of data security affecting the institution.

The public records currently available do not specify the exact nature of the incident or the particular categories of personal information that may have been compromised. The matter is officially listed as being under investigation by the credit union.

An official report regarding this event was filed on May 4, 2026. The total number of individuals potentially affected by this data incident has not been disclosed in the publicly accessible documents.

As a general precaution, individuals who believe they may be impacted should carefully review their financial account statements and credit reports. Monitoring for any suspicious or unauthorized activity can help in detecting potential misuse of their data.

It is also recommended to be cautious of unsolicited communications, such as emails or phone calls, that request personal or financial details. Always verify the legitimacy of any such requests directly with Mainstreet Credit Union using official contact methods, rather than information provided in the suspicious communication.

Questions about this case file

Where does the Mainstreet Credit Union case file come from?: Every entry is taken from the breach report Mainstreet Credit Union lodged with the Indiana Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Indiana data breaches

Filing source: Indiana Attorney General

Named in the Mainstreet Credit Union breach?

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Timeline

Case facts

Case notes

Questions about this case file

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