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Quest Diagnostics confirms data breach exposed patient records

Source: BleepingComputerBill ToulasOctober 23, 2026
Read the full story at BleepingComputer

Quest Diagnostics, a major American clinical laboratory company, confirmed a security incident in which an attacker gained unauthorized access to its Quanum LSM system. The breach resulted in exposure of patient records, representing a significant cybersecurity incident affecting healthcare data. The article indicates ongoing investigation and disclosure of the breach details.

Key points

  • Quest Diagnostics patient records exposed via unauthorized system access
  • Quanum LSM system compromised by threat actor
  • Represents major healthcare data security incident

Summary and key points written by AI from the headline and a short excerpt, so they can be incomplete or wrong. BleepingComputer did the reporting; read the original for the full story.

Read the full story at BleepingComputer

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