Quest Diagnostics says data on nearly12M patients exposed by breach

Grant Boone
June 4, 2019

- Quest Diagnostics, one of the nation's biggest clinical laboratories, warned that almost 12 million patients might be affected by a data breach that happened to a collections agency the clinic uses.

Quest Diagnostics said that an unauthorized user had access to AMCA's personal information, including patients from Quest Diagnostics.

Quest Diagnostics is one of the largest blood-testing providers in the country.

A collections agency called American Medical Collection Agency notified Quest about a potential intrusion on May 14 and then reported on the scope of the breach on Friday.

On May 31, AMCA notified Quest that the data on their affected system included information regarding about 11.9 million Quest patients.

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Among the information that might have been compromised includes credit card and bank account information, social security numbers as well as medical data.

Quest also said it is investigating the matter further and will "ensure patients are appropriately notified consistent with the law".

According to Quest, AMCA has not provided details on what data was compromised or which individuals may have been affected.

Darren Hayes, Assistant Professor at Pace University's Seidenberg School of Computer Science and Information Systems, said the announcement by Quest comes as no surprise "as healthcare records command higher prices on the black market than most types of personal identifiable information".

When it comes to companies, Nash says it boils down to vendor risk assessment.

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