People search Change Healthcare data breach timeline because regulated data and trust are existential—one incident triggers class actions and regulator exams. BreachHistory indexes 1 Change Healthcare-linked incident, with headline counts up to 145M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.
Why Change Healthcare breach history matters
Change Healthcare operates in Healthcare (United States). Across indexed rows, recurring themes include ransomware and extortion, credential theft and social engineering. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.
Full timeline through 2026
2024 — 145M records
Cataloged incident. ALPHV ransomware attack via compromised Citrix credentials (no MFA). Major healthcare disruption. Exposed categories include Credentials, Health information. BreachHistory cites approximately 145M+ affected records in this row. See the ch2024 and canonical BreachHistory entry.
Patterns and analysis
- Ransomware and extortion — appears across multiple Change Healthcare catalog entries; prioritize controls that address this class of failure.
- Credential theft and social engineering — appears across multiple Change Healthcare 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 Change Healthcare company page for new 2026+ disclosures.
Canonical BreachHistory hub
Explore every indexed row: breachhistory.com/change-healthcare · Latest: ch2024.
Sources: BreachHistory catalog (1 row for Change Healthcare), company and regulator disclosures cited in individual breach records.