Quest Diagnostics said the personal information of 11.9 million customers has potentially been compromised.

Full Credit: Daniel Acker/Bloomberg/Getty Images

Quest Diagnostics said the personal information of 11.9 million customers has potentially been compromised.

Full Credit: Daniel Acker/Bloomberg/Getty Images

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Quest Diagnostics says 12 million patients may have had their personal information exposed

Quest Diagnostics said the personal information of 11.9 million customers has potentially been compromised.