Quest Diagnostics Hit With Suit Over 11.9M Client Data Breach

Henrietta Brewer
June 8, 2019

AMCA said in an emailed statement it is investigating the incident and has also hired an external forensics firm.

The company told Opko Health it was notifying state attorneys general and other state agencies and almost 6,600 customers that availed Opko's testing services and whose credit card or bank account details were stored in AMCA's affected system.

No social security numbers, bank account passwords or security questions were compromised in the data breach, which happened between August 1, 2018, and March 30, 2019.

The number of people affected by the recent data breach at American Medical Collection Agency (AMCA), a billing collection services provider, continues to increase.


The company stated the exposed information could include personal and financial data like - first and last name, date of birth, address, phone, date of service, provider, and balance information.

It is unclear if any payment information associated with Quest was impacted.

"Quest is taking this matter very seriously and is committed to the privacy and security of our patients' personal information", the Secaucus-based medical laboratory company said in a press release. The lab clinic also said that it has not been able to verify the accuracy of information provided by AMCA.

In a similar recent incident, a data breach at Inmediata Health Group, a healthcare billing and administrative service provider, exposed the personal and medical data of MI residents.


LabCorp said it had been affected by the same third-party data breach that affected Quest Diagnostics.

AMCA told BioReference that "no Social Security Numbers were compromised" in the breach and, according to the OPKO Health subsidiary "no laboratory results or diagnostic information" were provided and stored on AMCA systems.

The medical sector is one of the most targeted by cybercriminals, as harvested data is extremely useful: it can be sold on the dark web or used directly for fraud. "Moreover, such breaches force victims to contend with identity theft that may lead to irreparable harm to their credit reports and financial futures, and to confront the real possibility that their confidential medical information and history has been exposed", Menendez and Booker wrote.


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