PHI Exposed in Data Breaches at Cedar Valley Services; Community Nurse; Health Dimensions Group
Data breaches have recently been reported by Cedar Valley Services and Health Dimensions Group in Minnesota, and Community Nurse in Massachusetts.
Cedar Valley Services, Minnesota
Cedar Valley Services, a provider of vocational rehabilitation services to individuals in Southern Minnesota, has notified the HHS’ Office for Civil Rights about a data incident that involved the exposure of individuals’ protected health information. Little information about the incident has been publicly disclosed by Cedar Valley Services at this point, other than it being a hacking/IT incident affecting at least 501 individuals. The 501 total provided to the HHS’ Office for Civil Rights is a commonly used placeholder figure when the number of affected individuals has yet to be determined.
This appears to have been a ransomware attack by the Qilin ransomware group, which added Cedar Valley Services to its dark web data leak site in December 2025. Qilin claims to have exfiltrated sensitive data in the attack. The listing was added on December 21, 2025, and screenshots of data allegedly stolen in the attack have been uploaded to the data leak site as proof; however, as of March 17, 2026, the full dataset does not appear to have been leaked.
Community Nurse, Massachusetts
Community Nurse, a Fairhaven, MA-based home health agency, has confirmed that the personal and protected health information of 6,746 individuals has potentially been compromised in a security incident at its document management and billing services vendor, Doctor Alliance. Doctor Alliance experienced a network disruption on November 13, 2025. The forensic investigation determined that a threat actor may have viewed or acquired files without authorization between October 31, 2025, and November 17, 2025.
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The analysis of those files was completed on March 2, 2026, and confirmed that they contained information such as names, addresses, dates of birth, Medicare numbers, start of care dates, certification period dates, medical record numbers, provider names and addresses, type of advance directives, diagnoses/current health statuses, medication lists, treatment orders, and goals of treatment. Doctor Alliance has implemented additional security measures to prevent similar incidents in the future, and notification letters have now been mailed to the affected individuals.
Health Dimensions Group, Minnesota
Health Dimensions Group, a Minneapolis, Minnesota-based provider of senior living and senior care management and consulting services, has reported a data breach to the Maine Attorney General that affected 450 individuals, including 1 Maine resident. Legal counsel for Health Dimensions Group explained in the notification letters that it first learned about a cybersecurity incident on October 20, 2025, and activated its incident response plan. Third-party cybersecurity experts were engaged to investigate the incident and assist with securing its environment, and they confirmed on November 6, 2025, that files were obtained in the incident.
The data review was completed on February 4, 2026, when it was confirmed that information relating to independent contractors was compromised in the incident, including names, addresses, and Social Security numbers. Notification letters were mailed to the affected individuals on March 11, 2026. While no data misuse has been identified, complimentary credit monitoring and identity theft protection services have been made available. The Worldleaks threat group claimed responsibility for the attack and leaked the stolen data, indicating the ransom was not paid. Since data has been leaked online, the affected individuals are advised to take advantage of the free credit monitoring services being offered.
