A Data Breach at Yale New Haven Health Compromised 5.5 Million Patients’ Information

[…]Yale New Haven Health (YNHHS), a massive nonprofit healthcare network in Connecticut. Hackers stole the data of more than 5.5 million individuals during an attack in March 2025.

[…]

According to a public notice on the YNHHS website, the organization discovered “unusual activity” on its system on March 8, 2025, which was later identified as unauthorized third-party access that allowed bad actors to copy certain patient data. While the information stolen varies by individual, it may include the following:

  • Name
  • Date of birth
  • Address
  • Phone number
  • Email address
  • Race
  • Ethnicity
  • Social Security number
  • Patient type
  • Medical record number

YNHHS says the breach did not include access to medical records, treatment information, or financial data (such as account and payment information).

[…]

Source: A Data Breach at Yale New Haven Health Compromised 5.5 Million Patients’ Information | Lifehacker

Wait – race and ethnicity?!

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