Ransomware Attack on University of Hawaiʻi Cancer Center Affects 1.2 Million Individuals

A ransomware attack on the University of Hawaiʻi Cancer Center in August 2025 compromised the personal data of approximately 1.2 million individuals. The breach occurred on August 31, 2025, targeting servers that support research operations at the institution. No specific malware strain, ransomware group, or technical attack vectors were disclosed in the incident. The impacted data includes personal information, though the exact types of exposed records were not detailed. The attack directly affected the University of Hawaiʻi Cancer Center’s systems and infrastructure.