Yale New Haven Health Notifying 5.5 Million of March Hack

In Data Breach News, News
April 25, 2025
Yale New Haven Health Notifying 5.5 Million of March Hack
The front entrance of Yale New Haven Hospital in New Haven May 13, 2020. Arnold Gold / Hearst Connecticut Media file photo

BankInfoSecurity reports:

Connecticut-based Yale New Haven Health System is notifying more than 5.5 million patients that their personal information, including Social Security numbers, could have been stolen in a March hack. The incident, which is among several other recent major health data hacks, ranks as the largest health data breach reported to federal regulator so far this year.

Patient information potentially compromised in the incident varied by individual, but may have included demographic information, such as name, date of birth, address, telephone number, email address, race or ethnicity, as well as Social Security number, patient type and medical record number.

The health system declined to answer other questions from the news site about whether this was a ransomware attack, whether there was any encryption of files, and whether there had been any ransom demand. As of publication, no ransomware group has claimed responsibility for the attack.

Read more at BankInfoSecurity.