Knoxville, Tenn.-based Tennova Healthcare said it has been affected by a third-party data breach that hit its parent company Franklin, Tenn.-based Community Health Systems.
In January, hackers breached GoAnywhere, the file transfer platform of Community Health System's third-party cybersecurity vendor, Fortra.
The breach affected 962,884 patients at Community Health Systems and the following affiliates: Tennova Healthcare; Birmingham, Ala.-based Grandview Medical Center; Huntsville, Ala.-based Crestwood Medical Center; Dothan, Ala.-based Flowers Hospital; Gadsden (Ala.) Regional Medical Center; Medical Center Enterprise (Ala.); and Foley, Ala.-based South Baldwin Regional Medical Center.
The data breach compromised patients' health information such as names, addresses, dates of birth, Social Security numbers, insurance information, medical diagnosis and medications.
Community Health Systems is notifying all affected individuals and providing them with free credit monitoring services.