People search University of Hawaii Cancer Center data breach timeline because regulated data and trust are existential—one incident triggers class actions and regulator exams. BreachHistory indexes 3 University of Hawaii Cancer Center-linked incidents, with headline counts up to 1.2M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why University of Hawaii Cancer Center breach history matters
University of Hawaii Cancer Center operates in Healthcare (United States). Across indexed rows, recurring themes include ransomware and extortion. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2026 — 1.15M records (ransomware)
Cataloged incident. The University of Hawai'i Cancer Center suffered a ransomware attack affecting approximately 1.15 million records. Exposed: Social Security numbers, driver's license numbers, names, and health research data from historical epidemiology records including 2000 State Department of Transportation records and 1998 voter registration data. Additionally, 87,493 Multiethnic Cohort Study participants had protected health information compromised. The university established a call center (844-443-0842) for credit monitoring a Exposed categories include SSNs, driver's licenses, names, health research data, PHI. BreachHistory cites approximately 1.1M+ affected records in this row. See the uh-cancer-center 2026 record and canonical BreachHistory entry.
2026 — 1.2M records (ransomware)
Cataloged incident. University of Hawaii Cancer Center suffered ransomware attack affecting ~1.2 million individuals. Epidemiology Division research data compromised including Multiethnic Cohort Study files from late 1990s–2000s. SSNs, driver licenses, names, health research data exposed. Largest affected groups: State DOT records (2000), Honolulu voter registration (1998). Dedicated call center established for credit monitoring enrollment. Exposed categories include Social Security numbers, driver licenses, names, health-related research data, registry information. BreachHistory cites approximately 1.2M+ affected records in this row. See the university-of-hawaii-cancer-center 2026 and canonical BreachHistory entry.
2025 — ~1.2M records (ransomware)
Cataloged incident. 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. Exposed categories include SSNs, driver's licenses, voter registration data. BreachHistory cites approximately 1.2M+ affected records in this row. See the uh-cancer-center2025 and canonical BreachHistory entry.
Patterns and analysis
- Ransomware and extortion — appears across multiple University of Hawaii Cancer Center catalog entries; prioritize controls that address this class of failure.
- Record-count hygiene — BreachHistory indexes actor-cited figures separately from company-confirmed totals; read each row's technicalWriteup before treating counts as fact.
- 2026 monitoring — New disclosures roll into this timeline as they are verified or labeled unverified per catalog policy.
What to do if you may be affected
- Step 1: Enable phishing-resistant MFA on every account tied to this brand.
- Step 2: Use unique passwords and a password manager—breach rows often involve credential reuse.
- Step 3: Monitor official company breach notices and regulator filings, not dark-web downloads.
- Step 4: Watch for medical-ID theft and billing fraud after health-data incidents.
- Step 5: Bookmark the University of Hawaii Cancer Center company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/university-of-hawaii-cancer-center · Latest: uh-cancer-center2026.
Sources: BreachHistory catalog (3 rows for University of Hawaii Cancer Center), company and regulator disclosures cited in individual breach records.