Cybersecurity & Data Privacy

Quest Diagnostics Data Breach

Blood testing provider Quest Diagnostics suffers major data breach from August 2018 through March 2019 exposing the personal, financial, and medical data of 12 million patients

Lieff Cabraser represents plaintiffs in a data breach lawsuit filed against Quest Diagnostics over the exposure of millions of patient medical and financial records. One of the biggest blood test providers in the United States, Quest Diagnostics admitted to federal regulators that the personal financial and medical information of nearly 12 million people was exposed in a massive data breach. The breached data includes credit card numbers, bank account information, medical information, and Social Security numbers.

Though the breach began as far as back as August of 2018 and continued until the end of March 2019, Quest says it still does not have sufficiently detailed or complete information on the breach to make a full report to regulators.

Contact a Personal Data Security Lawyer at Lieff Cabraser

If you are concerned that your information may have been compromised in the Quest Diagnostics data security failure, or if you have experienced identity theft or other action you think may be related to the Quest Diagnostics breach, we urge you to complete the contact form below today to submit your complaint. Named Law360’s 2017 “Digital Privacy and Data Protection Practice Group of the Year,” our team of nationally-renowned consumer protection lawyers will review your case for free and with no obligation on your part.


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