Millennium Health Systems, LLC Notifies Patients of Data Security Incident

Millennium Health Systems, LLC Notifies Patients of Data Security Incident Marlton, New Jersey – September 15, 2025 – Millennium Health Systems, LLC ("Millennium") has become aware of a data security event that may have involved the protected health information belonging to some of Millennium's patients. Millennium is providing this notification to notify potentially involved individuals about this incident. On or about July 17, 2025, Millennium became aware of unusual activity that disrupted access to a certain system. Upon becoming aware of this activity, Millennium took steps to secure its network and engaged a leading, digital forensics and incident response firm to investigate what happened and whether any sensitive data may have been impacted. On or about August 21, 2025, the investigation was completed and revealed certain protected health information may have been accessed and acquired without authorization by an unknown actor. There is no evidence of the misuse of any information potentially involved in this incident. However, Millennium provides this notification to notify potentially involved individuals about this incident. Based on the investigation of the incident, the following personal and protected health information may have been involved in the incident: name, address, driver's license number, date of birth, medical provider information, diagnosis, treatment information, and health insurance policy number. Millennium takes the security of patient information very seriously and is taking steps to prevent a similar event from occurring in the future. Upon becoming aware of the incident, Millennium took steps to secure its network environment and enlisted a leading, independent cybersecurity firm to conduct a forensic investigation. In addition, it implemented several measures to enhance its security posture with additional technical and physical safeguards. Millennium has established a toll-free call center to answer questions about the incident and related concerns. The call center is available Monday through Friday from 9:00 a.m. to 9:00 p.m. Eastern Standard Time and can be reached 855-291-2506. The privacy and protection of protected health information is a top priority for Millennium, which deeply regrets any inconvenience or concern this incident may cause. Publication Dates LNYS0373329 $