University of Hawaiʻi Cancer Center says up to 1.2 million affected in ransomware breach

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

University of Hawaii Cancer Center Cyberattack Exposes Data of 87,000+ Participants The University of Hawaii Cancer Center experienced a cyberattack that potentially exposed sensitive personal data, including Social Security numbers and driver's license numbers, of over 87,000 participants. The breach was discovered in December 2025, affecting research systems that stored data collected for epidemiological research over several decades. 10 sources 69