McLeod Health, a healthcare system, disclosed a data breach that affected its Dillon Family Medicine location. The breach was discovered on June 8, 2026. McLeod Health began notifying affected patients on June 4, 2026, though a ransomware group, Qilin, claimed responsibility on April 25, 2026. The incident was reportedly limited to a single server and did not involve other McLeod Health systems.
The breach exposed names, dates of birth, Social Security numbers, and protected health information, including diagnoses, medications, test results, images, health insurance information, and treatment information. The total number of affected individuals is 16,788 South Carolina residents. It remains unclear if other states are affected.
More details about this incident may emerge over time, and notification letters to consumers can sometimes be delayed.