Ransomware Breach at University of Hawaii Cancer Center Affects 1.2M People

The University of Hawaii Cancer Center suffered a ransomware breach detected on 31 August 2025 that impacted epidemiology research servers and exposed about 1.24 million records — including historical voter/transportation lists and 87,493 Multiethnic Cohort participants with names, addresses, SSNs and some health data; the university paid a ransom for a decryption tool and a promise of data destruction and is offering 12 months of credit monitoring and identity-theft insurance.