SecurityWeekEduard Kovacs
PEAR Ransomware Breach Hits MCBS, Exposing 1.2 Million
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.
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| Published (UTC) | Outlet | Headline |
|---|---|---|
| Mon 27 Jul · 05:21 UTC | SecurityWeek | PEAR Ransomware Breach Hits MCBS, Exposing 1.2 Million (this article) |
| Sat 29 Aug · 14:27 UTC | DataBreaches | PEAR ransomware attack leaks 1.4 TB of Texas health data |