By Join The Case · Published December 18, 2025 · Updated December 18, 2025 · 6 min read

Dapeer Law, P.A., a top-rated class action law firm, is investigating the Gelber Group data breach. If you received notice that your information was exposed during this breach, you may be entitled to compensation. It's free to join our investigation to see if we can help you recover.

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Gelber Group Data Breach Lawsuit Investigation

Gelber Group, LLC (“Gelber Group”) disclosed that a cyber-attack on its third-party vendor Conduent exposed sensitive health-plan information for 11 individuals. If you received a data breach letter, you may be entitled to free identity-protection services and potential compensation. Use the form on this page for a no-cost case evaluation.

Key Facts at a Glance

Vendor involved: Conduent
Breach window: October 21, 2024 – January 13, 2025
Discovered: January 13, 2025
Consumer notices mailed: November 5, 2025
Individuals affected: 11 (reported to Massachusetts Attorney General)
Information exposed: Name, address, date of birth, Social Security number, medical and treatment details, provider information, health-insurance number

What Happened?

According to the notice filed with the Massachusetts Attorney General, Conduent—which supplies mailroom, document-processing and payment-integrity services to Blue Cross Blue Shield of Illinois under a business associate agreement—experienced unauthorized system access between October 21, 2024 and January 13, 2025. On January 13, 2025, Conduent detected the intrusion, contained it within two weeks, and confirmed the threat had been removed by January 27, 2025.

Data Exposed

Conduent advised Gelber Group that the attacker “may have accessed” the following personally identifiable information (PII):

Name and address
Date of birth
Social Security number
Health-insurance number
Treatment or diagnosis information
Treatment date information
Provider information

Steps Gelber Group and Conduent Reported Taking

Conduent conducted an extensive investigation with third-party cybersecurity experts, contained the incident, and states that no active threat remains. The company is offering complimentary credit-monitoring and identity-restoration services through Kroll.

Recommended Actions for Impacted Individuals

The Gelber Group notice recommends:

Enroll in the free credit-monitoring and identity-restoration services provided by Kroll (see your letter for instructions).
Obtain a free credit report following the steps in Conduent’s notice.
Place a fraud alert or security freeze with the credit bureaus.
Contact Conduent’s dedicated assistance line at (866) 559-4749 (Monday–Friday, 9 AM–6:30 PM ET) or write to Conduent, Attn: Data Incident, 100 Campus Drive, Suite 200, Florham Park, NJ 07932.
Report suspected identity theft to the Federal Trade Commission or your state Attorney General.

Download Official Breach Notice (PDF)

Company Overview

Gelber Group, LLC (Gelber Group) is a privately held investment-management firm founded in 1982 and headquartered at 350 North Orleans Street, Chicago, IL, USA. The firm operates globally with over 200 employees.

Quick Facts

Website: gelbergroup.com
Industry: Investment Management
Headquarters: Chicago, Illinois, USA
Employees: 200+
Year Founded: 1982

Frequently Asked Questions

I received a data breach letter from Gelber Group — what should I do?

Follow the enrollment instructions for complimentary credit-monitoring from Kroll, review your credit reports, and consider placing a fraud alert or security freeze. Contact Conduent at (866) 559-4749 if you have questions.

How do I submit a claim related to the Gelber Group data breach?

Complete the free evaluation form on this page to learn about your legal options. An attorney will review whether you qualify to pursue a claim for potential damages.

Am I eligible to join a lawsuit against Gelber Group?

You may qualify if your personal information was involved in the breach. Eligibility depends on factors such as the type of data exposed and any resulting losses. Request a case review to find out.

What information did the Gelber Group breach expose?

The incident potentially exposed your name, address, date of birth, Social Security number, health-insurance number, and certain medical treatment or diagnosis details.

Did Gelber Group offer credit monitoring, and for how long?

Yes. Conduent is providing complimentary credit-monitoring and identity-restoration services through Kroll. The enrollment letter outlines the service terms.

How many people were affected by the Gelber Group breach?

Gelber Group reported 11 impacted individuals to the Massachusetts Attorney General.

How can I get the official breach notice (PDF) for Gelber Group?

You can download it directly from the Massachusetts Attorney General’s website using the button above.