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Friday, April 11, 2025
NEW HAVEN, CT, APRIL 11, 2025 – Yale New Haven Health (YNHHS) is notifying patients of a recent data security incident that involved patient information.
On March 8, 2025, YNHHS identified unusual activity affecting our IT systems. We immediately took steps to contain the incident and began an investigation with support from external cybersecurity experts, and we also reported the incident to law enforcement. At no point did the incident impact our ability to provide patient care.
Our investigation has now determined that an unauthorized third-party gained access to our network and, on March 8, 2025, obtained copies of certain data. The information involved varies by patient, but may include demographic information (such as name, date of birth, address, telephone number, email address, race or ethnicity), Social Security number, patient type, and/or medical record number. YNHHS’ electronic medical record system was not involved nor accessed in this incident, and no financial accounts, payment information or employee HR information was included.
We have begun the process of mailing letters to patients whose information was involved in this incident and providing appropriate resources, including offering complimentary credit monitoring and identity protection services to individuals whose Social Security number was involved. Patients are also encouraged to review statements they receive from their healthcare providers and immediately report any inaccuracies to the provider.
We take our responsibility to safeguard patient information incredibly seriously, and we regret any concern this incident may have caused. We are continuously updating and enhancing our systems to protect the data we maintain and to help prevent events such as this from occurring in the future. For more information on this incident, patients may visit YNHHS’ website at ynhhs.org or call our dedicated, toll-free call center at 1-855-549-2678, Monday through Friday, between 9:00 am and 9:00 pm Eastern Time, excluding major U.S. holidays.
Yale New Haven Health (YNHHS), the largest and most comprehensive healthcare system in Connecticut, is recognized for advanced clinical care, quality, service, cost effectiveness and commitment to improving the health status of the communities it serves. YNHHS includes five hospitals – Bridgeport, Greenwich, Lawrence + Memorial, Westerly and Yale New Haven hospitals, several specialty networks and Northeast Medical Group, a non-profit medical foundation with several hundred community-based and hospital-employed physicians. YNHHS is affiliated with Yale University and Yale Medicine, the clinical practice of the Yale School of Medicine and the largest academic multi-specialty practice in New England. Yale New Haven Hospital is the primary teaching hospital of Yale School of Medicine. www.ynhhs.org
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Dana Marnane
(203) 863-3126 office
(203) 584-0822 mobile
[email protected]