MedStar Health (2026)
2.1M patient records compromised in ransomware incident
Healthcare Data Breaches (727 indexed)
Cleveland Clinic
1.3M patient records exposed via zero-day in medical imaging PACS system
Copenhagen University Hospital
280K patient records stolen
Takeda Pharmaceutical (Japan)
670K clinical records compromised
NHS England (GP Surgeries)
2.6M patient records from 150+ GP surgeries exposed via shared IT platform compromise
Медицинская лаборатория Гемотест (Gemotest)
6,341,495 records exposed — Dates of birth, Email addresses, Genders, Government issued IDs and 4 more
Philips Healthcare
560K patient device records compromised
Royal Adelaide Hospital
340K patient records exposed
Cedars-Sinai Medical Center
420K patient records exposed via phishing attack on physician email accounts
ManageMyHealth (New Zealand)
1.8M registered health platform users — 126K patients directly affected
Denver Health
480K patient records stolen in targeted attack
NewYork-Presbyterian Hospital
850K patient records exposed via compromised clinical documentation vendor
Hartford Healthcare (Connecticut)
560K patient records stolen
Providence Health Care (Vancouver)
560K patient records compromised
Ontario Health (2025)
1.6M patient records compromised in ransomware incident
Queensland Health
780K patient records compromised
Yellowknife Health Centre
18K patient records exposed in network breach
ASL Roma (Italian NHS)
450K patient records compromised in LockBit attack
Hello Cake
22,907 records exposed — Dates of birth, Email addresses, Names, Phone numbers and 2 more
Emory Healthcare (Atlanta)
720K patient records exposed via compromised patient portal API — lab results leaked
Northwell Health (New York)
1.5M patient records compromised
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
Hospital Israelita Albert Einstein (Brazil)
340K patient records compromised