Medical tests and medication firm OPKO Health Inc says one of its subsidiaries, BioReference Laboratories Inc, was notified by American Medical Collection Agency (AMCA) of unauthorized activity on its web payment page. AMCA told BioReference that an unauthorized party accessed the BioReference medical test data of around 422,600 patients between August 1, 2018, and March 30, 2019. The accessed data also contained payment information and PII data. The company has shut down its web payments page, migrating it to a third-party vendor and hiring a cybersecurity firm to increase security.
Source: https://www.bleepingcomputer.com/news/security/over-400-000-opko-health-clients-impacted-by-amca-data-breach/