OneGroup NY Data Breach Class Action Investigation

At Console & Associates, our data breach lawyers are closely examining the recent OneGroup NY data breach. This data breach was disclosed following a cyber security incident potentially compromising sensitive personal and financial information tied to workers’ compensation claims processed by MEMIC Indemnity, one of OneGroup NY’s corporate clients..

What Happened?

According to a report filed with the Vermont Attorney General’s Office, OneGroup NY discovered suspicious activity involving one of its internal email accounts on July 29, 2024. An investigation revealed that between May 6 and May 21, 2024, an unauthorized party had gained access to the compromised account. The exposed data included confidential information belonging to individuals who filed workers’ compensation claims through MEMIC Indemnity.

Following the breach, OneGroup NY worked to identify the affected files and determine whose information had been accessed. This process concluded on February 4, 2025. On June 6, 2025, the company mailed data breach notification letters to all individuals whose information was determined to have been exposed in the incident.

Steps To Take If You Were Affected By A Data Breach

1. Monitor all accounts and credit reports closely
   1. Set up alerts for suspicious activity
   2. Review all financial statements thoroughly
   3. Request free credit reports and examine them for unauthorized entries
      
      
2. Consider freezing your credit
   1. Contact all three major credit bureaus to place a freeze
   2. Understand this prevents new accounts from being opened in your name
   3. Remember to temporarily lift the freeze when applying for legitimate credit
      
      
3. Look out for phishing attempts using information from the OneGroup NY data breach
   1. Be wary of unexpected emails or messages claiming to be from OneGroup NY
   2. Don't click on suspicious links or download unexpected attachments
   3. Verify all communications through official channels
      
      
4. Change passwords for affected accounts
   1. Create strong, unique passwords for each account
   2. Use a combination of letters, numbers, and special characters
   3. Consider using a password manager for better security
      
      
5. Enable two-factor authentication where possible
   1. Add this extra layer of security to all important accounts
   2. Use authenticator apps rather than SMS when available
   3. Keep backup codes in a secure location

For more detailed guidance, explore our “Guide for Victims of a Data Breach” to better understand measures you can take to protect yourself after a data breach.

OneGroup NY Overview

OneGroup NY is a regional insurance brokerage and risk management firm based in Syracuse, New York. With over three decades in the industry, the company serves thousands of clients—both businesses and individuals—throughout the Northeast and Southeast United States.

As part of the Community Financial System, Inc. group, OneGroup NY offers a wide range of services including employee benefits administration, workers’ compensation consulting, and general insurance solutions. The firm operates multiple offices across several states including Pennsylvania, South Carolina, Florida, and Massachusetts. With around 217 employees, OneGroup NY brings in approximately $94 million in annual revenue.

OneGroup NY Data Breach Victims Have Rights - Don’t Wait to Act

How do you know that you were affected by the OneGroup NY data breach? Usually victims receive a NOTICE OF DATA BREACH in the mail, but the impact of a breach can be felt long before notices are sent to those affected. This can be in the form of fraudulent financial activity and other forms of identity theft.

If you believe you were affected, we encourage you to reach out to our data breach law firm for legal assistance through a no-cost consultation about your situation. We will review your eligibility to file a data breach class action lawsuit and discuss your legal rights and any compensation that may be available to you.

Complete our confidential contact form below and a member of our legal team will be in touch.