Cleveland Medical Associates

Summary

A Tennessee-based medical practice experienced a ransomware attack that encrypted its network systems, prompting engagement with forensic investigators to assess potential data exposure. The investigation found no evidence of unauthorized access or misuse of protected health information, which included patient names, contact details, Social Security numbers, medical records, and insurance billing data. The organization implemented a new medical records system, reviewed security protocols, and notified law enforcement, offering full cooperation with any FBI investigation into the incident.

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TTPs

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Description

On April 21, 2017, Cleveland Medical Associates, PLLC, a four-physician primary care clinic in Cleveland, Tennessee, discovered that its computer network had been compromised by ransomware the previous evening. The malware encrypted information on the network, rendering it inaccessible, and demanded payment for decryption. The clinic immediately initiated response protocols upon detection of the incident. While the specific ransomware variant and initial attack vector were not disclosed, the encryption event disrupted normal operations by locking critical patient data systems. No immediate details were provided regarding whether the ransom was paid or how quickly system functionality was restored.

The clinic engaged a forensic investigation firm to assess the incident's scope and potential data exposure. Analysis confirmed the affected server contained patient demographic information including names, addresses, telephone numbers, email addresses, and Social Security numbers, alongside clinical medical records and insurance billing details. Investigators found no evidence that protected health information was exfiltrated from the system or misused. Cleveland Medical Associates implemented a new medical records system following the attack and reviewed its security procedures to strengthen defenses. The FBI was notified of the incident, with the clinic pledging full cooperation in any federal investigation. Patient notifications were issued to disclose the breach despite the absence of confirmed data misuse, outlining the types of information potentially accessible during the encryption event.

Sources

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