
Massive Yale New Haven Health Data Breach Exposes Information of 5.6 Million Patients
The sources describe a significant data breach at Yale New Haven Health in March 2025, impacting over 5.5 million individuals. While financial data and Social Security numbers were not compromised, sensitive information including names, addresses, dates of birth, and medical record numbers was exposed due to a hacking incident targeting a network server. This event has led to at least two federal lawsuits, with allegations of negligent cybersecurity practices against the health system. The breach highlights the critical need for enhanced cybersecurity measures within healthcare institutions and builds upon Yale's previous cybersecurity incidents.
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