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Quest Diagnostics Hit With Suit Over 11.9M Client Data Breach

08 June 2019

According to company estimates, approximately 422,600 BioReference patients had their information stored on the servers of American Medical Collection Agency, which was hacked beginning August 1, 2018.

Opko Health is not the only one that was affected by the data breach, as AMCA also alerted the company's rivals Quest Diagnostics Inc and Laboratory Corporation about the same issue, which affected 11.9 million and 7.7 million users, respectively, totaling of 19 million customers.

Opko Health learned June 6 that 422,600 patients may have had their data exposed in the breach.

AMCA advised that AMCA's affected system includes information provided by BioReference that may have included patient name, date of birth, address, phone, date of service, provider, and balance information.

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"AMCA's affected system also included credit card or bank account information that was provided by the consumer to AMCA (for those who sought to pay their balance)".

- 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 has reported that no laboratory data of patients were involved.

BioReference has not sent any collection requests to AMCA since October 2018, and it will not send any new collection requests to AMCA, Opko Health said in the filing.

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In these two breaches alone, roughly 19 million of their customers having been impacted by unauthorized access to the companies' data stored on AMCA's systems.

In a separate letter (PDF) to Rusckowski, Menendez and Booker demanded that Quest provide a detailed timeline of the breach incident and the steps the company is taking to identify and limit potential patient harm.

Warner, a leading cybersecurity advocate in Congress, said in the letter to Quest CEO Stephen Rusckowski that he was concerned about Quest's supply chain management and third-party selection and monitoring process. Besides, patients whose information has been exposed are at risk of identity theft, low credit reports, and might jeopardize their financial future. The AMCA also told Quest and Optum that it has been in contact with law enforcement about the incident.

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Quest Diagnostics Hit With Suit Over 11.9M Client Data Breach