McLaren Health Care
2.2M patient records compromised in ALPHV/BlackCat ransomware attack
Healthcare Data Breaches (826 indexed)
Welltok (Health Engagement)
8.5M patient records exposed via MOVEit vulnerability at health engagement platform
Welltok
8.5M patient records exposed via MOVEit vulnerability
Welltok Patient Engagement Platform
8.5M patient records exposed via MOVEit Transfer vulnerability — multi-insurer impact
Legacy Community Health
228K patient records exposed in data breach
Retina Group of Washington
455K patient records exposed in ransomware
HCA Healthcare
11M patient records stolen from external storage environment
Sutter Health (vendor)
845K patient records exposed through vendor compromise
Robeson Health Care Corporation
15K patient records exposed
Independent Living Systems (Florida)
4.2M Medicaid managed care records exposed — largest FL healthcare breach of 2023
HCA Healthcare
11.3M patient records stolen from external storage facility
BORN Ontario (Birth Registry)
3.4M newborn screening records exposed via MOVEit vulnerability at Ontario health agency
Barts Health NHS Trust (ALPHV)
7TB of data stolen by ALPHV/BlackCat — largest NHS trust, 2.5M patient catchment
Barts Health NHS Trust (London)
7TB patient data stolen by BlackCat — largest NHS trust with 2.5M patient catchment
Croatian Hospital Centre Zagreb
Ransomware disrupted Croatia's largest hospital — patient systems offline
National Health Laboratory Service (SA)
Ransomware disrupted blood test results delivery across South Africa
HUB International
280K insurance client records exposed
Northeast Radiology / Alliance HealthCare
1.2M radiology patients notified after MOVEit vulnerability exploitation
Humber River Hospital (Toronto)
Daixin Team ransomware targeted hospital systems — patient records at risk
Monument / Tempest Telehealth
2.6M addiction recovery patients — therapy session data shared with advertisers
CoWIN Portal (India)
150M citizen vaccination records allegedly leaked from India's COVID platform
Hill Physicians Medical Group
306K member records exposed
Encompass Health
160K patient records exposed in data breach
Eisai Pharmaceuticals (Japan)
LockBit ransomware encrypted servers at global pharma company