ATLANTA-BASED medical business management company MCBS experienced a significant data breach affecting over 1.2 million individuals after being hacked in September 2025. The breach involved access to personal information, including names, addresses, SSNs, and medical data, with over 3 TB of files allegedly stolen by the PEAR ransomware group. This group also claimed responsibility for other breaches, including incidents affecting Motility Software Solutions and Tri-Century Eye Care. The U.S.
Department of Health and Human Services highlights the extent of the incident, with additional details available on MCBS's data breach notification.