Quest Diagnostics hit by cyberattack on Quanum laboratory platform

The company identified unauthorized access to its systems on Wednesday, specifically affecting the platform that doctors and hospitals use to request diagnostic tests. While Quest has not disclosed the exact number of affected individuals, the scope of the potential exposure is significant. Quanum serves roughly half a million clinicians, and the platform houses extensive medical charts and diagnostic histories. Quest confirmed that protected health information was among the stolen data, though investigators are still determining the specific categories of records accessed by the intruders.

This incident adds to a troubling trend of cyberattacks targeting healthcare infrastructure throughout the year. Companies including Stryker, Boston Scientific, and McKesson have all faced operational disruptions or data theft, highlighting the sector's vulnerability to financially motivated criminal groups. Quest remains under pressure to clarify the extent of the breach, particularly as the company navigates its second major data security failure in a decade. A previous incident in 2019 resulted in the loss of 11.9 million patient records via a third-party billing vendor. Quest spokesperson Amanda Rivera declined to provide further details, directing inquiries to a security notice that the company has obscured from search engine indexing.