Understanding your Stark Bancshares dba Grand Missouri Bank data breach notification letter
If a Stark Bancshares dba Grand Missouri Bank letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.
Why you received this letter
Stark Bancshares, operating as Grand Missouri Bank, filed notice of a data security incident with Indiana authorities in December 2025. This event, which occurred in October 2025, involved unauthorized access to systems containing personal information. Individuals who received notification letters should carefully review their personal accounts and records for any unusual activity.
What to do after the letter
Confirm the notice is genuine
A legitimate Stark Bancshares dba Grand Missouri Bank notice references the specific incident reported to the IN Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.
Keep the letter — it is your proof of connection
The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.
Protect your accounts and credit
Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.
Check the record against the public filing
You can verify the Stark Bancshares dba Grand Missouri Bank incident against the filing reported to the IN Attorney General. This registry summarizes what was filed; it does not provide legal advice.
This page summarizes a data breach reported to the IN Attorney General for informational purposes. DataBreachInformation.com is a neutral reference registry and does not provide legal advice.