People search Episource data breach timeline because regulated data and trust are existential—one incident triggers class actions and regulator exams. BreachHistory indexes 1 Episource-linked incident, with headline counts up to 6.6M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Episource breach history matters
Episource operates in Healthcare (United States). 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
2025 — 6.6M patients
Cataloged incident. Unauthorized cybercriminal accessed Episource systems between January 27 and February 6, 2025. Healthcare services company providing risk adjustment and medical coding; owned by Optum (UnitedHealth). Exposed data included Medicaid-Medicare IDs, medical records, diagnoses, test results, medications, and treatment details. Second-largest breach reported to HHS in 2025. Exposed categories include Names, addresses, phone numbers, email, SSNs, health insurance info, Medicaid-Medicare IDs, medical records, diagnoses, test results, medications, treatment details. BreachHistory cites approximately 6.6M+ affected records in this row. See the episource2025 and canonical BreachHistory entry.
Patterns and analysis
- Mixed intrusion and disclosure events — appears across multiple Episource 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 Episource company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/episource · Latest: episource2025.
Sources: BreachHistory catalog (1 row for Episource), company and regulator disclosures cited in individual breach records.