GoKawiilQuest Diagnostics confirms data breach exposed patient records via Quanum LSM
Quest Diagnostics disclosed in an SEC filing that it detected unauthorized access to its Quanum LSM lab-ordering platform on October 21, 2026. The company says some patient records were exposed, though the specific data types affected are still being determined, and it has notified law enforcement while external experts assist the investigation. Quest states its customer-facing operations and direct LIS/EMR interfaces were unaffected, and it has paused access to Quanum LSM, Essential Insights and LabHQ as a precaution.