Overview
- Quest discovered unauthorized access to its Quanum Lab Services Manager platform, which it detected Wednesday and then disabled to stop the intrusion.
- The company says it believes certain patient health or identifying records were accessed but the full scope and specific data fields remain under active investigation.
- Quest notified federal law enforcement, hired external cybersecurity experts, and has paused some system access while using paper requisitions and other electronic routes so providers can keep ordering tests.
- The company reports no material disruption to core testing operations and says it expects to restore full system access quickly while it prepares any required patient and regulator notifications.
- The incident follows prior Quest-related exposures in 2016 and 2019 and highlights continuing cyber risks to healthcare providers, with potential downstream costs, regulatory probes, and patient-notification obligations depending on the investigation’s findings.