People search University of Michigan Health-West data breach timeline because regulated data and trust are existential—one incident triggers class actions and regulator exams. BreachHistory indexes 1 University of Michigan Health-West-linked incident, with headline counts up to 119 in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why University of Michigan Health-West breach history matters
University of Michigan Health-West operates in Healthcare (United States). Across indexed rows, recurring themes include third-party and supply-chain exposure. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2026 — illicit record pulls via nationwide health-information exchange (Epic notifies ~119 Chart patients)
Cataloged incident. University of Michigan Health‑West traced improbable Health Information Exchange (HIE) pull patterns after January 2026 alerts routed through Epic Systems. Between March 12 and March 25 2026, internal adjudication flagged third-party solicitor identities misrepresenting care relationships and surfacing parallels to Epic’s litigation naming Health Gorilla and affiliates for façade-provider abuse. Unauthorized chart exposure window published to patients ranged October 18 2023 through November 12 2025 with fields sp Exposed categories include Demographics, diagnoses, meds, allergy data, insurer metadata; no confirmed SSN exfiltration per UM Health-West public statement. BreachHistory cites approximately 119 affected records in this row. See the u-m-health-west-hie-third-party-access 2 and canonical BreachHistory entry.
Patterns and analysis
- Third-party and supply-chain exposure — appears across multiple University of Michigan Health-West 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 Michigan Health-West company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/university-of-michigan-health-west · Latest: u-m-health-west-hie-third-party-access2026.
Sources: BreachHistory catalog (1 row for University of Michigan Health-West), company and regulator disclosures cited in individual breach records.