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eClinicalWorks Data Breaches: Full Timeline Through 2026

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People search eClinicalWorks data breach timeline because regulated data and trust are existential—one incident triggers class actions and regulator exams. BreachHistory indexes 1 eClinicalWorks-linked incident, with headline counts up to 3.4M+ in catalog rows. This page maps every attested event through 2026 with internal links to canonical records.

Why eClinicalWorks breach history matters

eClinicalWorks operates in Healthcare (United States). Across indexed rows, recurring themes include cloud and database misconfiguration. Understanding the chronological pattern helps security teams, customers, and regulators separate confirmed disclosures from forum marketing.

Full timeline through 2026

2025 — portal intrusion Nov 2024–Oct 2025

Unverified claim — treat actor counts cautiously. TriZetto Provider Solutions—a Cognizant-owned revenue-cycle and eligibility vendor frequently encountered by eClinicalWorks customers for claims and clearinghouse-style workflows—disclosed suspicious activity on October 2, 2025, involving a customer-facing web portal with forensics tracing unauthorized access to November 2024. Regulatory and trade reporting cited more than 3.4 million individuals across downstream healthcare clients, with PHI categories including insurance identifiers, demographic fields, and SSN-c Exposed categories include Names, addresses, DOB, SSNs, health-plan member IDs, provider and insurer metadata per HIPAA Journal / BankInfoSecurity summaries. BreachHistory cites approximately 3.4M+ affected records in this row. See the eclinicalworks-trizetto-tps2025 and canonical BreachHistory entry.

Patterns and analysis

  • Cloud and database misconfiguration — appears across multiple eClinicalWorks 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

  1. Step 1: Enable phishing-resistant MFA on every account tied to this brand.
  2. Step 2: Use unique passwords and a password manager—breach rows often involve credential reuse.
  3. Step 3: Monitor official company breach notices and regulator filings, not dark-web downloads.
  4. Step 4: Watch for medical-ID theft and billing fraud after health-data incidents.
  5. Step 5: Bookmark the eClinicalWorks company page for new 2026+ disclosures.

Canonical BreachHistory hub

Explore every indexed row: breachhistory.com/eclinicalworks · Latest: eclinicalworks-trizetto-tps2025.

Sources: BreachHistory catalog (1 row for eClinicalWorks), company and regulator disclosures cited in individual breach records.