Data Breach Law Group Investigates the Duo County Telephone Cooperative Corporation, Inc. and Cumberland Cellular, LLC as DUO Broadband Data Breach

Miami, FL — Data Breach Law Group is investigating a data breach involving Duo County Telephone Cooperative Corporation, Inc. and Cumberland Cellular, LLC as DUO Broadband, reported to the New Hampshire Attorney General on May 15, 2025. The firm is reviewing whether affected individuals have legal claims arising from the incident.

Duo County Telephone Cooperative Corporation, Inc. and Cumberland Cellular, LLC, operating as DUO Broadband, is a telecommunications provider offering internet, telephone, and cellular services to its subscribers. As a utility-based service provider, the company typically collects and maintains sensitive customer information, including personally identifiable information, billing details, and service account records necessary for managing telecommunications infrastructure. In 2025, the company officially reported a data security incident to the New Hampshire Attorney General, indicating that unauthorized access to their systems occurred. If you received a data breach notification letter from DUO Broadband, it means that your personal information was likely involved in this incident. This letter serves as formal notice regarding the nature of the event and the specific data elements that may have been compromised.