People search UCLA Health data breach timeline because regulated data and trust are existential—one incident triggers class actions and regulator exams. BreachHistory indexes 1 UCLA Health-linked incident, with headline counts up to 4.5M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why UCLA Health breach history matters
UCLA Health operates in Healthcare. Across indexed rows, recurring themes include mixed intrusion and disclosure events. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2015 — 4.5M patient records
Cataloged incident. UCLA Health System suffered a cyberattack that compromised the personal and medical information of approximately 4.5 million patients. The breach was discovered in May 2015 after attackers had accessed systems containing patient data. Exposed categories include Names, medical records, SSNs, financial info. BreachHistory cites approximately 4.5M+ affected records in this row. See the ucla-health2015 and canonical BreachHistory entry.
Patterns and analysis
- Mixed intrusion and disclosure events — appears across multiple UCLA Health 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 UCLA Health company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/ucla-health · Latest: ucla-health2015.
Sources: BreachHistory catalog (1 row for UCLA Health), company and regulator disclosures cited in individual breach records.