Highland Oncology Group Settles Litigation Stemming From 2025 Ransomware Attack
Highlands Oncology Group, an Arkansas-based physician-owned community cancer care and research practice serving Northwest Arkansas, Southwest Missouri, and Southeast Oklahoma, has agreed to settle class action litigation stemming from a 2025 ransomware attack and data breach that affected 113,575 individuals. The ransomware attack was identified by Highlands Oncology Group on or around June 2, 2025. While the attack was identified in early June, the investigation determined that the ransomware group first gained access to its network as early as January 21, 2025. Data accessed and/or exfiltrated included names, dates of birth, Social Security numbers, driver’s license/state identification numbers, passport numbers, credit/debit card numbers, financial account numbers, medical treatment information, medical record numbers, patient account numbers, and/or health insurance policy information. The affected individuals were notified on August 1, 2025, and the first class action lawsuit was filed on August 5, 2025. In total, thirteen class action lawsuits were filed in response to the...
Hacking Incidents Announced by Rehabilitative Care Providers and Senior Living Facilities
Data breaches have been announced by multiple North Carolina rehabilitative care practices, senior living and skilled nursing care providers in Ohio and Washington, and the California-based nonprofit foundation The Health Trust and its subsidiary, FASS. North Carolina Rehabilitation Practices Notify Patients About November Hacking Incident The operator of multiple clinical, long-term, and rehabilitative care practices in North Carolina has reported a data security incident that has affected almost 4,000 patients of Elevate Health & Rehabilitation, Bear Mountain Health and Rehabilitation, and Swannanoa Valley Health and Rehabilitation. On June 1, 2026, the operator learned that there had been unauthorized access to files maintained by an unnamed third-party vendor, and some of those files had been copied by a bad actor. The unauthorized third party used stolen credentials to log in to its system between November 25, 2025, and November 28, 2025. The obtained files contained patient information such as names, addresses, email addresses, dates of birth, Social Security numbers,...
DaVita Agrees to Pay $15 Million to Settle Data Breach Litigation
In 2025, the kidney dialysis giant DaVita experienced a ransomware attack that involved the theft of sensitive patient data. Some of the affected individuals took legal action in response to the data breach, which they claim has put them at risk of identity theft and fraud. Following extensive negotiations, a $15 million settlement has been proposed to bring the litigation to an end. DaVita operates more than 3,000 kidney dialysis centers in the United States and 14 other countries. On April 12, 2025, the Interlock ransomware group accessed its network, exfiltrated data, and encrypted files, causing temporary disruption to operations. The forensic investigation determined that the electronic protected health information of 2,689,826 individuals was compromised in the incident, including names, contact information, Social Security numbers, health insurance information, clinical information, and tax information. Interlock claimed to have exfiltrated more than 20 terabytes of data and proceeded to leak around 1.5 terabytes of that data on its web data leak site when the ransom was not...
Aesto Health Data Breach Affects 9.5 Million Patients
On August 14, 2026, we reported on a data breach at the Birmingham, Alabama-based healthcare technology company Aesto Health. While it was clear when we reported on the incident that it was a major breach, the number of individuals affected was unclear. We now know that at least 39 of the company’s healthcare provider clients were affected, as detailed in the list at the bottom of this page. The data breach has now been reported to the HHS’ Office for Civil Rights as involving the electronic protected health information of 9,540,683 individuals, which makes it the second-largest confirmed healthcare data breach of the year to date, behind the 15 million record data breach at DentaQuest. August 14, 2026: Aesto Health Data Security Incident Affects Multiple Healthcare Provider Clients A data breach at Aesto Health, a Birmingham, Alabama-based healthcare technology company, has affected several of its healthcare provider clients. Aesto Health provides secure data migration, legacy data archiving, and electronic health record (EHR) exchanges for medical practices and...
American Vision Partners Settles Data Breach Litigation for $1.75M
Medical Management Resource Group LLC (MMRC), doing business as American Vision Partners, has agreed to settle class action litigation stemming from a 2024 data breach. MMRC identified suspicious activity within its computer systems on November 14, 2023. The forensic investigation confirmed on or around December 6, 2023, that certain systems had been accessed by an unauthorized third party, and files had been exfiltrated from its network, some of which contained patient information. Data compromised in the incident included names, contact information, dates of birth, medical information, clinical records, and medications. A subset of individuals also had their Social Security numbers compromised. The data breach was reported to the HHS Office for Civil Rights on February 6, 2026, as affecting more than 2.35 million individuals; however, the OCR breach portal was later updated with a slightly smaller figure of 2,264,157 individuals. The class action lawsuit states that approximately 1.6 million Americans were affected by the data breach. Multiple class action lawsuits were filed in...



