2025 UH Cancer Center — ~1.2M records (ransomware)
Data compromised
SSNs, driver's licenses, voter registration data
Technical writeup
University of Hawaii Cancer Center ransomware incident discovered Aug 31, 2025; disclosed Feb 28, 2026. ~1.2M records exposed including SSNs, driver's licenses, voter registration data. Epidemiology Division affected.
Root cause
Ransomware