ManageMyHealth (New Zealand)
1.8M registered health platform users — 126K patients directly affected
Healthcare Data Breaches (742 indexed)
Denver Health
480K patient records stolen in targeted attack
NewYork-Presbyterian Hospital
850K patient records exposed via compromised clinical documentation vendor
Providence Health Care (Vancouver)
560K patient records compromised
Hartford Healthcare (Connecticut)
560K patient records stolen
ASL Roma (Italian NHS)
450K patient records compromised in LockBit attack
Yellowknife Health Centre
18K patient records exposed in network breach
Ontario Health (2025)
1.6M patient records compromised in ransomware incident
Queensland Health
780K patient records compromised
Hello Cake
22,907 records exposed — Dates of birth, Email addresses, Names, Phone numbers and 2 more
Northwell Health (New York)
1.5M patient records compromised
Emory Healthcare (Atlanta)
720K patient records exposed via compromised patient portal API — lab results leaked
Guy's and St Thomas' NHS Trust
780K patient records compromised
Cognizant TriZetto Provider Solutions
3.4M patient health records exposed via insurance eligibility verification portal
Romanian Health Ministry
450K patient records compromised in ransomware
Baxter International
340K medical records exposed
Hospital Israelita Albert Einstein (Brazil)
340K patient records compromised
Corewell Health (Michigan)
1M patient records exposed via third-party vendor Welltok
Stryker Corporation
340K medical device records stolen
Memorial Sloan Kettering Cancer Center
190K patient oncology research records exposed via targeted spear-phishing campaign
Henry Ford Health (Michigan)
890K patient records compromised in ransomware
Saskatchewan Health Authority
450K patient records stolen in ransomware
United Surgical Partners
1.7M patient records compromised across 400+ facilities
Medibank Private (2025)
1.8M member records compromised in second breach