Quest Diagnostics discloses unauthorized access to Quantum Lab Services Manager system, patient records likely compromised
Quest Diagnostics, a Fortune 500 diagnostic testing company based in Secaucus, New Jersey, told the SEC in a Form 8-K filed on October 22, 2026 that it detected unauthorized access to its Quantum Lab Services Manager (LSM) system on October 21, 2026. The company suspects patient records were compromised, but the scale of the breach has no…