On December 23rd, 2022, the Lake Charles Memorial Health System (LCMHS) began sending out notifications regarding a newly discovered data breach that is currently impacting approximately 270,000 patients. LCMHS is the largest medical complex in Lake Charles, Louisiana, which contains multiple hospitals and a primary care clinic. The organization discovered unusual activity on their network on October 21, 2022, and determined on October 25, 2022, that an unauthorized actor gained access to the organization’s network as well as “accessed or obtained certain files from [their] systems.” The LCMHS notice listed the following patient information as exposed: patient names, addresses, dates of birth, medical record or patient identification numbers, health insurance information, payment information, limited clinical information regarding received care, and Social Security numbers (SSNs) in limited instances. While LCMHS has yet to confirm the unauthorized actor responsible for the data breach, the Hive ransomware group listed the organization on their data leak site on November 15, 2022, as well as posted files allegedly exfiltrated after breaching the LCMHS network. The posted files contained “bills of materials, cards, contracts, medical info, papers, medical records, scans, residents, and more.” It is not unusual for Hive to claim responsibility for the associated attack as the threat group has previously targeted hospitals/healthcare organizations. CTIX analysts will continue to monitor the Hive ransomware group into 2023 and provide updates on the Lake Charles Memorial Health System data breach as necessary.