Kidney dialysis provider DaVita suffered a massive ransomware attack in April 2025 that compromised personal information of more than one million people. The Interlock ransomware gang accessed DaVita's dialysis labs database, stealing names, Social Security numbers, medical records, financial details, and even images of personal checks.
The breach affected both DaVita patients and individuals whose lab results were processed by DaVita Labs for other healthcare providers. DaVita has offered free credit monitoring and identity protection services to victims.
The attack cost DaVita $13.5 million in remediation expenses and disrupted patient care. This ranks as the seventh largest data breach of 2025 and highlights the growing threat ransomware poses to healthcare systems nationwide.
Source: SecurityWeek