Multiple Healthcare Data Breaches Expose Patient Information
Several healthcare organizations in the United States have reported significant data breaches resulting in the exposure of protected health information (PHI) for tens of thousands of patients. TriZetto Provider Solutions, a revenue management service provider, discovered unauthorized access to its web portal dating back to November 2024, with attackers accessing historical eligibility transaction reports containing sensitive patient data such as names, addresses, Social Security numbers, and health insurance details. The breach was detected in October 2025, after which immediate remediation steps were taken, including engaging Mandiant for investigation and securing the affected systems.
Other incidents include breaches at Morton Drug Company in Wisconsin, Physicians to Children & Adolescents in Kentucky, the Center for Urologic Care of Berks County in Pennsylvania, North Atlantic States Carpenters Health Benefits Fund in Massachusetts, and Millcreek Pediatrics in Delaware. These breaches involved unauthorized network access and resulted in the exposure of PHI, including names, birth dates, medical record numbers, prescription information, and, in some cases, Social Security numbers. Affected organizations have notified impacted individuals and are offering credit monitoring services where appropriate, while also implementing enhanced security measures to prevent future incidents.
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How this story unfolded
4 events from the most recent confirmed update back to the earliest known activity.
TriZetto notifies healthcare provider clients of data breach
By December 2025, TriZetto Provider Solutions had notified its healthcare provider clients about the breach and offered to manage breach notifications, regulatory reporting, and credit monitoring and identity theft protection for affected individuals. The full number of affected people was not yet known.
TriZetto confirms prolonged PHI exposure and secures portal
The investigation found that unauthorized access had persisted for nearly a year, from November 2024 until discovery in October 2025. TriZetto took steps to secure the portal, said the threat actor had been eradicated, and reported no further unauthorized activity after detection.
TriZetto detects suspicious activity in web portal
On October 2, 2025, TriZetto detected suspicious activity in its web portal and began investigating the incident. Mandiant led the investigation into the unauthorized access affecting healthcare provider client data.
Unauthorized access to TriZetto web portal begins
TriZetto Provider Solutions later determined that unauthorized access to historical eligibility transaction reports in its web portal began in November 2024. The exposed data included protected health information such as names, addresses, dates of birth, Social Security numbers, insurance details, and other demographic and health information.
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TriZetto Provider Solutions Notifies Healthcare Provider Clients About Data Breach
hipaajournal.com
Open sourceData Breaches Announced by Morton Drug Company & Physicians to Children & Adolescents
hipaajournal.com
Open sourceData Breaches Announced by North Atlantic States Carpenters Health Benefits Fund & Millcreek Pediatrics
hipaajournal.com
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Large US Healthcare Data Breaches Impacting Millions of Patients
Multiple healthcare-sector data breaches were disclosed with significant exposure of **protected health information (PHI)**. TriZetto Provider Solutions (TPS), an insurance verification provider, reported a compromise that began in **November 2024** and was not detected until nearly a year later; the threat was reportedly eradicated on **Oct. 2, 2025**. Notifications to affected healthcare provider customers across several states continued into late 2025 and early 2026, with one Oregon advisory estimating exposure affecting **more than 700,000 people**; impacted providers stated there was no current evidence of misuse and that **financial details were not stolen**. Separately, Healthcare Interactive (*HCIactive*), an AI-powered insurance enrollment and benefits administration vendor, confirmed that an intrusion and data exfiltration tied to activity in mid-2025 ultimately affected **3,056,950 individuals**, after earlier placeholder reporting while scope was still being determined; reported unauthorized access windows vary from **July 8–12, 2025** to a broader **June 17–July 22, 2025**. Another incident involved AI care-coordination platform *Lena Health*, where a threat actor claimed exposure of patient data (including references to a **Twilio call recording database**) and alleged that **2,134 patients’ PHI** was stored in an unencrypted export in a public-facing **AWS S3 bucket**, with follow-on reporting indicating exploitation after a publicly disclosed vulnerability and an available patch that was not applied in time.
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Cognizant Technology Solutions, through its subsidiary TriZetto Provider Solutions, experienced a significant data breach that went undetected for nearly a year, exposing sensitive personal information such as Social Security numbers, financial account details, and home addresses. The breach, which affected at least 100 individuals across several states, led to multiple class-action lawsuits alleging delayed disclosure, insufficient notification to victims, and a lack of transparency regarding the incident's root cause and remediation. Plaintiffs argue that the delay in notification left affected individuals vulnerable to identity theft and financial fraud, while Cognizant and TriZetto have offered limited public comment due to ongoing litigation. Separately, Covenant Health, a major healthcare provider operating in several northeastern US states, suffered a ransomware attack by the Qilin group in May 2025. The attack compromised the data of over 478,000 individuals, leading to system shutdowns across hospitals and clinics and prompting the organization to hire cybersecurity experts for containment and investigation. Covenant Health initially reported a smaller number of affected individuals but later updated the total to nearly half a million, subsequently notifying patients and offering credit monitoring and identity protection services. Both incidents underscore the persistent cybersecurity risks facing the healthcare sector and the significant impact of breaches on patient privacy and organizational trust.
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TriZetto Provider Solutions Data Exfiltration Affecting Healthcare Client Insurance Data
**TriZetto Provider Solutions** (a Cognizant business unit providing revenue cycle management and claims clearinghouse services) is notifying more than **3.4 million individuals** after investigators determined threat actors accessed and exfiltrated healthcare clients’ **insurance-related data**. The activity reportedly began in **November 2024** but was not detected until **October 2025**, indicating a prolonged period of unauthorized access before discovery. The incident was reported to the U.S. Department of Health and Human Services via the **HIPAA Breach Reporting Tool** as impacting approximately **3.43 million** people, while TriZetto has not publicly specified how many healthcare customers were affected. Multiple healthcare organizations have publicly stated they were impacted and have issued their own patient notifications, underscoring downstream exposure risk for providers relying on TriZetto’s billing and claims processing services.
Mar 21, 2026