Data breach at University of Hawaiʻi Cancer Center impacts 1.2 Million individuals

A ransomware attack on August 31, 2025, against the University of Hawaiʻi Cancer Center’s research systems led to encryption of servers and confirmed exfiltration of data affecting about 1.2 million records, including names, Social Security numbers, driver’s license details, voter registration and health-related research data; the center isolated affected systems, involved law enforcement and external cybersecurity experts, and is offering 12 months of credit monitoring to those impacted.