Big Brothers Big Sisters of Eastern Missouri Reports Indiana Data Breach

Big Brothers Big Sisters of Eastern Missouri notified Indiana regulators of a data security incident that occurred on March 5, 2026. The breach involved the exposure of various personal details, including Full Name, Social Security Number, and Date of Birth. Individuals are encouraged to review the public filing and take protective steps.

State: Indiana
Breach date: March 5, 2026
Reported: September 14, 2026

What may have been exposed

Full Name
Date of Birth
Social Security Number
Mailing Address
Email Address
Background Check Records
Phone Number
Donation and Payment History

Big Brothers Big Sisters of Eastern Missouri has filed a data breach notification with Indiana authorities, indicating a security incident that led to the compromise of personal information. The breach occurred on March 5, 2026, with the official report submitted on September 14, 2026.

The nature of the breach was not specified in the public filing. However, the organization, which provides mentoring services, handles a wide range of sensitive data for participants, volunteers, donors, and staff. Data breaches often result from unauthorized access to systems or other cyber security lapses.

The types of personal data reportedly exposed in this incident include Full Name, Date of Birth, Social Security Number, Mailing Address, Email Address, Background Check Records, Phone Number, and Donation and Payment History. The exposure of such categories of data can create risks for affected individuals, potentially leading to identity theft or unauthorized account access.

Individuals who received a notification letter about this incident should remain vigilant. It is generally advisable to monitor financial statements and credit reports for any suspicious activity. Changing passwords for online accounts and being cautious of unsolicited communications, especially those requesting personal details, are also recommended protective measures.

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.
Secure your online accounts
Change the password on any account that reused an exposed password and turn on two-factor authentication wherever it's offered.
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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