Understanding your 133Big Brothers Big Sisters of Eastern Missouri data breach notification letter
If a 133Big Brothers Big Sisters of Eastern Missouri 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
Big Brothers Big Sisters of Eastern Missouri disclosed a data breach filed on September 14, 2026, stemming from an incident around March 5, 2026. Exposed information includes Full Name, Date of Birth, Social Security Number, Mailing Address, Email Address, Background Check Records, Phone Number, and Donation and Payment History. This exposure increases the risk of identity theft and other fraudulent activities for affected individuals.
Information the filing reports as involved
- Full Name
- Date of Birth
- Social Security Number
- Mailing Address
- Email Address
- Background Check Records
- Phone Number
- Donation and Payment History
What to do after the letter
Confirm the notice is genuine
A legitimate 133Big Brothers Big Sisters of Eastern Missouri notice references the specific incident reported to the Indiana 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 133Big Brothers Big Sisters of Eastern Missouri incident against the filing reported to the Indiana Attorney General. This registry summarizes what was filed; it does not provide legal advice.
This page summarizes a data breach reported to the Indiana Attorney General for informational purposes. DataBreachCaseFile.com is a neutral reference registry and does not provide legal advice.