TriZetto Provider Solutions Breach Incident Score: Analysis & Impact (TRI1765483872)

In this Rankiteo incident briefing, we review the TriZetto Provider Solutions breach identified under incident ID TRI1765483872.

The analysis begins with a detailed overview of TriZetto Provider Solutions's information like the linkedin page: https://www.linkedin.com/company/trizettoprovider, the number of followers: 9031, the industry type: IT Services and IT Consulting and the number of employees: 326 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 753 and after the incident was 626 with a difference of -127 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on TriZetto Provider Solutions and their customers.

On 01 November 2025, TriZetto Provider Solutions disclosed Data Breach issues under the banner "TriZetto Provider Solutions Data Breach".

TriZetto Provider Solutions, a Cognizant-owned provider of revenue management services to physicians, hospitals, and health systems, notified certain healthcare clients about a cybersecurity incident involving unauthorized access to a web portal used to access TriZetto systems.

The disruption is felt across the environment, affecting Web portal used by healthcare provider customers, and exposing Protected Health Information (PHI).

In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Immediate action to secure the web portal, and began remediation that includes Eradication of threat actor, forensic investigation, and system review, while recovery efforts such as Review of compromised data and notification of affected clients continue, and stakeholders are being briefed through Notifications to affected healthcare clients, offer to handle breach notifications on their behalf.

The case underscores how Completed (forensic investigation concluded), with advisories going out to stakeholders covering Notifications to affected healthcare clients with lists of affected individuals and compromised data.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Exploit Public-Facing Application (T1190) with moderate to high confidence (80%), with evidence including unauthorized access to a web portal used by providers, and web Portal Compromise and Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating prolonged undetected access (Nov 2024-Oct 2025) implies compromised credentials. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating 11-month window of unauthorized access suggests maintained access. Under the Credential Access tactic, the analysis identified Steal Application Access Token (T1528) with moderate confidence (60%), supported by evidence indicating web portal compromise may involve stolen session tokens or credentials. Under the Collection tactic, the analysis identified Data from Information Repositories (T1213) with high confidence (90%), supported by evidence indicating accessed historical eligibility transaction reports containing PHI. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating unauthorized access to PHI implies data exfiltration, though not explicitly confirmed. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no evidence of data destruction, but included due to PHI exposure risk and Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating no evidence of manipulation, but prolonged access raises possibility. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.