Cognizant TriZetto Breach Exposes Health Data of 3.4 Million Patients
TriZetto Provider Solutions, a healthcare IT company and subsidiary of Cognizant, experienced a data breach where unauthorized actors accessed a web portal used by healthcare providers. The breach, detected in October 2025, allowed access to sensitive health information for over 3.4 million patients. The compromised data includes full names, physical addresses, dates of birth, Social Security numbers, health insurance member numbers, Medicare beneficiary identifiers, provider names, health insurer names, and other demographic, health, and insurance information. Unauthorized access to records began in November 2024. The company started notifying affected customers in early February 2026, with widespread public reporting of the breach's scale occurring on March 6, 2026.
Signal context
First seen: Mar 6, 2026
Last updated: Jun 26, 2026
Status: Public signal
Key points
- 3,433,965 individuals affected.
- Compromised data includes full name, physical address, date of birth, Social Security number, health insurance member number, Medicare beneficiary identifier, provider name, health insurer name, and demographic, health, & insurance information.
- Unauthorized access began on November 19, 2024, and was detected on October 2, 2025.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Finance and Insurance
Likely country: Location not provided
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data
- 21 signals in the same sector
- 90 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Cognizant TriZetto breach exposes health data of 3.4 million patients - Bleeping Computerhttps://www.bleepingcomputer.com/news/security/cognizant-trizetto-breach-exposes-health-data-of-34-million-patients/Public source from bleepingcomputer.com.
TriZetto Breach Exposed 3.4 Million Patients' Data - Gblockhttps://gblock.com/trizetto-breach-exposed-3-4-million-patients-data/Public source from gblock.com.
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