Yale New Haven Health Led a Cyberattack in early March 2025 A subsequent study showed theft of sensitive data More than five million people could have been affected
A recent cyberattack at Yale New Haven Health (YNHHS) may have resulted in theft of sensitive data from more than five million people.
The non-profit health network confirmed the news in a legal announcement published on its website stating it had identified “unusual activity” on its IT systems on March 8, 2025.
The subsequent study conducted with the help of a third -party forensic expert showed that “copies of certain data” were stolen.
Litigation about class actions incoming
“At no time did this incident affect our ability to provide patient care,” said Ynhhs.
The organization then detailed the information stolen: people’s names, birth dates, addresses, phone numbers, e -mail addresses, race and ethnicity, information about personal security, patient type information and/or medical journal numbers.
Electronic medical items and processing information were not stolen, emphasized the organization, adding that Crooks did not stole financial account or payment information.
While the message did not discuss the number of persons affected, Bleeping computer Found a new post on the US Ministry of Health and Human Services Violation of the Portal, stating that 5,556,702 patients are affected.
The publication says that given the extent of the impact, litigation on class actions is “already prepared” by law firms representing affected persons who will seek reimbursement.
At the time of the press, no threat actors assumed the responsibility for the attack, and the data is not yet on its way on the dark web.
In general, organizations in the health industry are an attractive target for cyber criminals due to the sensitivity of the files they generate and the fact that many are still running outdated and neglected hardware and software.
In mid -March 2025, for example, both Sunflower Medical Group and Community Care Alliance confirmed that he suffered a cyberattack and lost data of about 300,000 people.
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