Quest Diagnostics Reports Breach Affecting Certain Patient Records
Medical laboratory operator Quest Diagnostics has reported a cyber breach affecting "certain patient records" on its Quanum Lab Services Manager system. The company discovered the unauthorized access and is working with cybersecurity experts to investigate the full scope of the…
Biloxi Gulfport, MS, October 22, 2026 —
Quest Diagnostics, a medical laboratory operator, has reported a cyber breach involving “certain patient records” on its Quanum Lab Services Manager system. The company discovered unauthorized access and is working with cybersecurity experts to investigate the incident’s full scope.
The information provided does not specify when the access occurred or when Quest Diagnostics discovered it. It also does not identify how many records may have been affected, what types of patient information were involved, or whether any information was copied or otherwise taken from the system.
No details were provided about the method used to gain access, whether the incident affected other Quest Diagnostics systems, or whether the company has notified patients or regulators. The available information also does not include a statement about whether the unauthorized access has been stopped.
Quest Diagnostics is investigating with outside cybersecurity experts, but the scope of the incident has not yet been established in the information provided. Further details about the investigation, affected records and any response measures were not included.
Story summarized from the original created by Associated Press on www.wxxv25.com, see more information here.
