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Quest Diagnostics disclosed in an SEC filing that an unknown threat actor gained unauthorized access to its Quanum LSM (Lab Services Manager) system, which clients use to place test orders and look up results. The company learned of the intrusion on October 21, 2026 and activated its incident response protocol. It believes some patient re…
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…
Quest Diagnostics disclosed in a Form 8-K that an unidentified party gained unauthorized access to its Quanum LSM (Lab Services Manager) system and may have accessed certain patient records. The company became aware of the incident on October 21, 2026. Quest paused access to the affected platform, activated incident response procedures, n…
Quest Diagnostics disclosed in a Thursday regulatory filing that it detected unauthorized access to its Quanum Lab Services Manager, a platform where certain clients place test orders and look up results. The company discovered the intrusion on Wednesday and notified federal law enforcement. It believes "certain patient records" were acce…
