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Big Brothers Big Sisters of Eastern Missouri data breach

Big Brothers Big Sisters of Eastern Missouri reported a data security incident to Indiana authorities in September 2026. This breach involved sensitive personal information collected from program participants, mentors, and donors, potentially exposing them to various forms of fraud and identity theft.

Incident readout

Company
Big Brothers Big Sisters of Eastern Missouri
Reported to
Indiana Attorney General
Filed
September 14, 2026
People affected
Not stated in the filing
Incident type in filing
Not stated
Our review
Monitoring
Read the official filing

Was this a ransomware attack?

The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.

Information listed in the filing

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

What we know

Big Brothers Big Sisters of Eastern Missouri has reported a data security incident, with a formal filing made to authorities in Indiana on September 14, 2026. The organization, which manages sensitive records for its community-based mentoring programs, acknowledged that an unspecified breach occurred on March 5, 2026.

The compromised data categories include Full Name, Date of Birth, Social Security Number, Mailing Address, Email Address, Background Check Records, Phone Number, and Donation and Payment History. The presence of Social Security Number and Date of Birth in the exposed data creates a significant risk for individuals, as these details are frequently exploited by malicious actors.

Attackers who gain access to this type of personal information often use it for various fraudulent activities. This can include opening new lines of credit, filing false tax returns, or attempting to gain unauthorized access to existing accounts. The exposure of background check reports and contact information could also lead to targeted phishing attempts or social engineering scams.

If you have received a notification letter from Big Brothers Big Sisters of Eastern Missouri, it is crucial to take immediate protective measures. We recommend placing a fraud alert on your credit reports with Equifax, Experian, and TransUnion, and regularly reviewing all financial statements for any suspicious activity. Consider freezing your credit to prevent new accounts from being opened in your name.

Organizations entrusted with personal data have a legal and ethical responsibility to safeguard that information. A successful data breach suggests potential gaps in the security measures designed to protect your sensitive records. Such vulnerabilities could arise from inadequate system monitoring, unpatched software, or other failures in cybersecurity protocols.

Receiving a data breach notification indicates that your personal information was compromised due to this incident. Our firm is currently investigating the Big Brothers Big Sisters of Eastern Missouri data breach on behalf of affected individuals. We offer a free case review to help you understand your rights and potential legal options, with no upfront costs.

See every breach reported in Indiana or read what to do after a ransomware attack.

After the Big Brothers Big Sisters of Eastern Missouri incident: what to do and your options

What should I do after getting the Big Brothers Big Sisters of Eastern Missouri data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
How many people were affected by the Big Brothers Big Sisters of Eastern Missouri data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Date of Birth, Social Security Number, Mailing Address, Email Address, Background Check Records, Phone Number, Donation and Payment History. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Did Big Brothers Big Sisters of Eastern Missouri offer free credit monitoring?
Any free monitoring Big Brothers Big Sisters of Eastern Missouri is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Signing up doesn't waive any legal rights you may have.
Where can I see the official Big Brothers Big Sisters of Eastern Missouri breach notice?
Big Brothers Big Sisters of Eastern Missouri's report is published by the Indiana Attorney General: https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/security-breaches/#133big-brothers-big-sisters-of-eastern-missouri-2026 Compare it with the letter you received to confirm the dates and details match.
Can I sue Big Brothers Big Sisters of Eastern Missouri over the data breach?
It depends on what was exposed, the law in Indiana and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
Do I need a Big Brothers Big Sisters of Eastern Missouri data breach lawyer or attorney?
Whether the company's systems were encrypted by ransomware or data was simply taken, the legal question is the same: did it protect your information the way the law requires? An attorney can review your notice for free, and these cases are usually handled on contingency.
Is there a Big Brothers Big Sisters of Eastern Missouri data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Big Brothers Big Sisters of Eastern Missouri. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
Is the Big Brothers Big Sisters of Eastern Missouri data breach letter legit or a scam?
A notice from Big Brothers Big Sisters of Eastern Missouri in the mail matches the breach Big Brothers Big Sisters of Eastern Missouri reported to the Indiana Attorney General on September 14, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Big Brothers Big Sisters of Eastern Missouri through a phone number or website you find yourself.
How much could a Big Brothers Big Sisters of Eastern Missouri data breach settlement or claim be worth?
There is no set amount, and no Big Brothers Big Sisters of Eastern Missouri settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. The filing lists Full Name, Date of Birth, Social Security Number as involved. Keep receipts and records; they're what damages claims are built on.

Other breaches reported in Indiana

Attorney advertising. This page reflects a public regulator filing; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.