TMG Health
Company Details
Linkedin ID:
tmg-health
Website:
Employees number:
462
Number of followers:
3,764
NAICS:
62
Industry Type:
Homepage:
tmghealth.com
IP Addresses:
0
Company ID:
TMG_1593708
Scan Status:
In-progress
TMG Health Company CyberSecurity Posture
tmghealth.com
TMG Health is a leading national provider of expert solutions for Medicare Advantage, Medicare Part D and Managed Medicaid plans. With more than 19 years of experience of providing technology-enabled services to the government market exclusively, our knowledge of health plan processes, CMS requirements and the daily challenges plans face within the government market is second to none. Our expertise, coupled with a strong commitment to our Clients’ success, positions us as a trusted advisor and partner who can help solve the challenges of today and prepare for those of tomorrow. TMG Health has a legacy of serving both large and small health plans and Pharmacy Benefit Managers, across the nation. We offer a full range of tried and true solutions and can manage the processes for the complex Dual Eligible population. TMG Health understands our Clients’ needs for agile and scalable solutions that allow them to focus on member outcomes, revenues and growing competition. Our innovative solutions are built to keep pace with the changing needs of the government market and enable our Clients to stay competitive and successful.
TMG Health A.I CyberSecurity Scoring
TMG Health Risk Score (AI oriented)Between 700 and 749
TMG Health
Updated:
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TMG Health Global Score (TPRM)XXXX
TMG Health
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TMG Health Company CyberSecurity News & History
Past Incidents
10
Attack Types
3
TriZetto Provider Solutions
TriZetto Healthcare Products
OCHIN, Inc.VillageCareMAX, TMG Health and Inc.: VillageCareMAX Data Breach Investigation
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: VillageCareMAX Reports Data Breach Affecting Sensitive Patient Information VillageCareMAX, a healthcare provider, disclosed a data breach involving the potential exposure of sensitive personal and health information. The incident stemmed from unauthorized access to systems managed by TMG Health, Inc. (TMG), a third-party call center administrator contracted by VillageCareMAX. According to the breach notice, TMG detected the intrusion after an unauthorized individual gained access to VillageCareMAX-related data stored on TMG’s systems. The exposure window spanned nearly ten months, from November 20, 2024, to September 19, 2025. Following an investigation, TMG confirmed that compromised data may have included: - Full names - Social Security numbers - Member identification numbers - Protected health information VillageCareMAX began notifying affected individuals on January 13, 2026, via mailed breach notification letters. The notices detail the specific types of exposed data for each impacted person and include complimentary credit monitoring services. The breach was formally reported to the Massachusetts Attorney General’s office, with documentation available through the provided filing link. The full scope of affected individuals and the exact cause of the breach remain under review.
TriZetto Provider Solutions and BACH: Bay Area Community Health Data Breach Investigation
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: BACH Reports Data Breach Affecting Sensitive Patient Information via Third-Party Vendor BACH, a healthcare provider, recently disclosed a data breach involving the potential exposure of sensitive personal and health information. The incident stemmed from a security compromise at TriZetto Provider Solutions (TPS), a third-party insurance clearinghouse integrated with BACH’s electronic medical record system (OCHIN). On October 2, 2025, TPS detected suspicious activity on a web portal used by its healthcare provider customers. Following an investigation, TPS confirmed to BACH that an unauthorized third party may have accessed data tied to BACH between November 2024 and October 2, 2025. BACH was formally notified of the breach on December 15, 2025. The compromised data varies by individual but may include: - Full names - Social Security numbers - Dates of birth - Contact details - Health and insurance-related information In response, BACH published a breach notice on its website, detailing the incident and offering affected individuals complimentary credit monitoring services. The notice includes a breakdown of the exposed data types for impacted parties. The breach highlights the risks of third-party vendor vulnerabilities in healthcare data security.
TriZetto, OCHIN and CommuniCare+OLE: CommuniCare+OLE Data Breach Investigation
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: CommuniCare+OLE Reports Data Breach Affecting Sensitive Patient Information CommuniCare+OLE, a healthcare provider, disclosed a data breach involving unauthorized access to sensitive personal and health information. On December 15, 2025, OCHIN CommuniCare+OLE’s electronic medical record system provider alerted the organization that an unauthorized individual had compromised a system managed by TriZetto, a third-party vendor. The breach prompted an investigation to assess the scope and impact. While details of the security incident remain undisclosed, affected data may include names, Social Security numbers, dates of birth, contact information, and health or insurance-related records. The exact information exposed varies by individual. CommuniCare+OLE has since begun notifying impacted individuals via mail, providing specifics on the compromised data. The breach notice filed with the California Attorney General’s office outlines the types of information potentially exposed. Further details can be found in the official notification documents.
TriZetto, OCHIN and Petaluma Health Center: Petaluma Health Center Data Breach Investigation
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: Petaluma Health Center Data Breach Exposes Sensitive Patient Information Petaluma Health Center recently disclosed a data breach affecting sensitive personal and health-related information of its patients. On December 15, 2025, the center was alerted by its electronic medical record system, OCHIN, that an unauthorized individual had accessed a system belonging to TriZetto, a third-party vendor working with OCHIN. TriZetto’s investigation confirmed that patient data linked to Petaluma Health Center may have been exposed during the breach. The compromised information varies by individual but includes names, Social Security numbers, dates of birth, contact details, and health or insurance-related data. In response, Petaluma Health Center began notifying affected individuals via mail, detailing the specific types of information impacted. The center and TriZetto are also offering complimentary credit monitoring services to those affected. The breach notice was filed with the California Attorney General’s office.
TriZetto, OCHIN and Adapt Integrated Health Care: Adapt Integrated Health Care reports data breach at vendor, assures patient info safety
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: Adapt Integrated Health Care Reports Third-Party Data Security Incident Adapt Integrated Health Care disclosed a data security incident involving TriZetto, a third-party vendor for its electronic medical record system provider, OCHIN. The breach was discovered on December 10, 2025, when OCHIN notified Adapt that an unauthorized individual had accessed one of TriZetto’s systems. TriZetto acted to halt the unauthorized activity and secure its systems. While Adapt’s internal systems were not directly breached, the incident may have exposed sensitive patient information. Not all patients were affected, and there is currently no evidence that the data has been misused. Potentially exposed data includes: - Names - Social Security numbers - Dates of birth - Contact information - Health-related and insurance details Adapt is collaborating with OCHIN to strengthen security measures and review its own processes to prevent future incidents. TriZetto plans to begin sending individual notification letters to affected patients in February 2026, with support from its vendor, Kroll, which will provide identity theft protection services, call center assistance, and credit monitoring enrollment instructions. For further details, patients may contact TriZetto’s dedicated call center at (844) 572-2724 or reach out to Heather Donohue, COO of TriZetto Provider Solutions, at (314) 802-6789.
OCHIN, TriZetto Provider Solutions and SFCHC: San Francisco Community Health Center Data Breach Investigation
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: SFCHC Reports Data Breach Affecting Patient Information via Third-Party Vendor San Francisco Community Health Center (SFCHC) disclosed a data breach involving sensitive patient information, stemming from a security incident at one of its business associates. On December 12, 2025, SFCHC was alerted by OCHIN a vendor managing its electronic health record system that TriZetto Provider Solutions (TriZetto), a subcontractor handling healthcare eligibility and claims, had experienced unauthorized access to its systems. TriZetto’s investigation confirmed that an unauthorized third party may have accessed patient data linked to SFCHC between November 2024 and October 2, 2025. The exposed information varies by individual but includes names, Social Security numbers, addresses, dates of birth, and health insurance details such as member numbers, insurer names, and provider information. SFCHC has since reviewed the impacted data to identify affected individuals and began mailing breach notification letters. In compliance with California regulations, the notices outline the specific types of compromised information and offer complimentary credit monitoring services to those affected. The breach report filed with the California Attorney General’s office provides further details.
TriZetto Provider Solutions Notifies Healthcare Provider Clients About Data Breach
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: TriZetto Provider Solutions Discloses Year-Long Data Breach Affecting Healthcare Clients TriZetto Provider Solutions, a Cognizant-owned revenue management services provider for healthcare organizations, has begun notifying healthcare clients about a cybersecurity incident involving unauthorized access to a web portal used by providers. The breach was first detected on October 2, 2025, when suspicious activity prompted immediate containment efforts. Cybersecurity firm Mandiant was engaged to investigate, confirming the threat actor had been removed from the system, with no further unauthorized access detected since the discovery. Forensic analysis revealed the breach had been ongoing since November 2024, nearly a year before detection. The attacker accessed historical eligibility transaction reports containing protected health information (PHI) of patients from affected healthcare clients. Exposed data includes names, addresses, dates of birth, Social Security numbers, health insurance member numbers (including Medicare beneficiary IDs), insurer details, and other demographic and health-related information though no financial data was compromised. TriZetto completed its review of the compromised data by late November 2025, identifying the affected individuals and notifying impacted healthcare clients. Under the HIPAA Breach Notification Rule, affected providers must notify individuals within 60 days of being informed, meaning patient notifications are expected by early 2026. TriZetto has offered to manage breach notifications, regulatory filings (including to the HHS’ Office for Civil Rights), and media disclosures on behalf of its clients, as well as cover costs for credit monitoring, fraud consultation, and identity theft restoration services. The full scope of the breach remains unclear, but given the 11-month window of unauthorized access, the incident could affect a significant number of patients. Updates are expected as further details emerge.
Belcan
Data Leak
Rankiteo Explanation
Attack with significant impact with internal employee data leaks
Description: The Cybernews research team came up with an open Kibana instance that contained private data on Belcan, its personnel, and internal systems. ElasticSearch's analytics and data search engine uses Kibana as a visualization dashboard. These systems aid businesses in managing massive data volumes. The leaked Belcan data includes Admin emails, Admin usernames, Admin roles (what organizations they’re assigned to), Internal network addresses, Internal infrastructure hostnames and IP addresses, Internal infrastructure vulnerabilities, and actions taken to remedy/not remedy them. Belcan was warned of the vulnerabilities by Cybernews, and before this article was published, the business had put precautions in place to deal with the problem. Before this story was published, Belcan did not send any additional remarks on the results.
Cognizant
Ransomware
Rankiteo Explanation
Attack threatening the organization's existence
Description: IT services provider Cognizant was hit by the Maze ransomware group in April 2020. The ransomware incident only impacted the internal network including supporting employees' work from home setups. The attack impacted its revenue by the range of $50 million to $70 million for the quarter,
TriZetto and Adapt Integrated Health Care: Adapt reports vendor data breach
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: TriZetto Vendor Data Breach Exposes Patient Information in Third-Party Incident Adapt Integrated Health Care has disclosed a data breach involving TriZetto, a third-party vendor that provides electronic medical record services through OCHIN. The incident, first reported to Adapt on December 10, 2015, involved an unauthorized individual gaining access to one of TriZetto’s systems. Potentially compromised data includes names, Social Security numbers, dates of birth, contact details, health-related information, and insurance records. While not all patients were affected, TriZetto plans to begin sending individual notification letters in February 2026 to those impacted. Adapt confirmed that its internal systems were not breached the incident occurred at a subcontractor of one of its vendors. The organization is collaborating with OCHIN to strengthen security measures and review its own processes to prevent future risks. TriZetto has set up a dedicated call center (844-572-2724) and is working with vendor Kroll to provide notification services, call center support, and identity theft protection, including pre-paid credit monitoring for affected individuals. Additional updates may be sent by TriZetto or Kroll. The breach highlights the risks of third-party vendor vulnerabilities in healthcare data security.
TMG Health Company Scoring based on AI Models
Cyber Incidents Likelihood 3 - 6 - 9 months
A.I Risk Score Likelihood 3 - 6 - 9 months
Underwriter Stats for TMG Health
Incidents vs Hospitals and Health Care Industry Average (This Year)
TMG Health has 21.26% fewer incidents than the average of same-industry companies with at least one recorded incident.
Incidents vs All-Companies Average (This Year)
TMG Health has 28.57% fewer incidents than the average of all companies with at least one recorded incident.
Incident Types TMG Health vs Hospitals and Health Care Industry Avg (This Year)
TMG Health reported 1 incidents this year: 0 cyber attacks, 0 ransomware, 0 vulnerabilities, 1 data breaches, compared to industry peers with at least 1 incident.
Incident History — TMG Health (X = Date, Y = Severity)
TMG Health cyber incidents detection timeline including parent company and subsidiaries
TMG Health Company Subsidiaries
TMG Health is a leading national provider of expert solutions for Medicare Advantage, Medicare Part D and Managed Medicaid plans. With more than 19 years of experience of providing technology-enabled services to the government market exclusively, our knowledge of health plan processes, CMS requirements and the daily challenges plans face within the government market is second to none. Our expertise, coupled with a strong commitment to our Clients’ success, positions us as a trusted advisor and partner who can help solve the challenges of today and prepare for those of tomorrow. TMG Health has a legacy of serving both large and small health plans and Pharmacy Benefit Managers, across the nation. We offer a full range of tried and true solutions and can manage the processes for the complex Dual Eligible population. TMG Health understands our Clients’ needs for agile and scalable solutions that allow them to focus on member outcomes, revenues and growing competition. Our innovative solutions are built to keep pace with the changing needs of the government market and enable our Clients to stay competitive and successful.
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TMG Health CyberSecurity News
January 19, 2026 03:46 PM
Tens of Thousands of Patients Affected by Two Business Associate Data Breaches
Mid Michigan Medical Billing Service, a Flint, MI-based revenue cycle management company that provides billing support services to...
January 15, 2026 03:35 PM
VillageCareMAX Data Breach Investigation
Strauss Borrelli PLLC, a leading data breach law firm, is investigating VillageCareMAX regarding its recent data breach.
March 03, 2024 09:47 AM
Interview: Mayank Gandhi, Founder & CEO of TMG Security
An interview with Mayank Gandhi, Founder & CEO of TMG Security, High-Quality Affordable Cybersecurity Courses.
December 07, 2023 08:00 AM
Cloudland and TMG to merge
A wider range of services to primary healthcare customers and better regional coverage promised.
September 20, 2023 07:00 AM
August 2023 Healthcare Data Breach Report
There was a 21.4% month-over-month increase in healthcare data breaches in August. 68 data breaches of 500 or more records were reported to...
September 07, 2023 07:00 AM
TMG Health Faces Class Action Over Data Breach Affecting 192,000
TMG Health Inc. failed to protect the personal health information of more than 192000 people that was exposed in a June data breach,...
August 21, 2023 07:00 AM
July 2023 Healthcare Data Breach Report
There was a 15.2% fall in reported data breaches in July with 56 breaches of 500 or more records reported to the HHS' Office for Civil Rights (OCR).
June 13, 2017 07:00 AM
Cognizant to Acquire Health Care Service Corporation’s Unit TMG Health
Cognizant has entered an agreement to acquire Health Care Service Corporation (HCSC) subsidiary TMG Health, a leading national provider of...
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
TMG Health CyberSecurity History Information
Official Website of TMG Health
The official website of TMG Health is http://tmghealth.com.
TMG Health’s AI-Generated Cybersecurity Score
According to Rankiteo, TMG Health’s AI-generated cybersecurity score is 700, reflecting their Moderate security posture.
How many security badges does TMG Health’ have ?
According to Rankiteo, TMG Health currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Has TMG Health been affected by any supply chain cyber incidents ?
According to Rankiteo, TMG Health has been affected by multiple supply chain cyber incidents. The affected supply chain sources and their corresponding incident IDs are:
- TMG Health (Incident ID: VILTMG1768494119)
- TriZetto Provider Solutions (Incident ID: TRIBAC1768252046)
- TriZetto Healthcare Products (Incident ID: TRIOCHCOM1769016387)
- TriZetto Healthcare Products (Incident ID: TRIOCHPET1769201334)
- TriZetto Healthcare Products (Incident ID: TRIOCHADA1768955835)
- OCHIN, Inc. (Incident ID: OCHTRISAN1768259195)
- TriZetto Provider Solutions (Incident ID: TRI1765483872)
- TriZetto Healthcare Products (Incident ID: TRIADA1769117193)
Does TMG Health have SOC 2 Type 1 certification ?
According to Rankiteo, TMG Health is not certified under SOC 2 Type 1.
Does TMG Health have SOC 2 Type 2 certification ?
According to Rankiteo, TMG Health does not hold a SOC 2 Type 2 certification.
Does TMG Health comply with GDPR ?
According to Rankiteo, TMG Health is not listed as GDPR compliant.
Does TMG Health have PCI DSS certification ?
According to Rankiteo, TMG Health does not currently maintain PCI DSS compliance.
Does TMG Health comply with HIPAA ?
According to Rankiteo, TMG Health is not compliant with HIPAA regulations.
Does TMG Health have ISO 27001 certification ?
According to Rankiteo,TMG Health is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of TMG Health
TMG Health operates primarily in the Hospitals and Health Care industry.
Number of Employees at TMG Health
TMG Health employs approximately 462 people worldwide.
Subsidiaries Owned by TMG Health
TMG Health presently has no subsidiaries across any sectors.
TMG Health’s LinkedIn Followers
TMG Health’s official LinkedIn profile has approximately 3,764 followers.
NAICS Classification of TMG Health
TMG Health is classified under the NAICS code 62, which corresponds to Health Care and Social Assistance.
TMG Health’s Presence on Crunchbase
No, TMG Health does not have a profile on Crunchbase.
TMG Health’s Presence on LinkedIn
Yes, TMG Health maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/tmg-health.
Cybersecurity Incidents Involving TMG Health
As of January 25, 2026, Rankiteo reports that TMG Health has experienced 10 cybersecurity incidents.
Number of Peer and Competitor Companies
TMG Health has an estimated 31,617 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at TMG Health ?
Incident Types: The types of cybersecurity incidents that have occurred include Ransomware, Breach and Data Leak.
What was the total financial impact of these incidents on TMG Health ?
Total Financial Loss: The total financial loss from these incidents is estimated to be $50 million.
How does TMG Health detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an containment measures with precautions in place to deal with the problem, and incident response plan activated with yes, and third party assistance with mandiant (cybersecurity firm), and containment measures with immediate action to secure the web portal, and remediation measures with eradication of threat actor, forensic investigation, and system review, and recovery measures with review of compromised data and notification of affected clients, and communication strategy with notifications to affected healthcare clients, offer to handle breach notifications on their behalf, and third party assistance with tps launched an investigation, and remediation measures with review of impacted data, identification of affected individuals, and recovery measures with provision of complimentary credit monitoring services, and communication strategy with breach notice posted on bach's website, notification letters to affected individuals, and third party assistance with trizetto launched an investigation, and remediation measures with review of impacted data, identification of affected individuals, and mailing of data breach notification letters, and communication strategy with data breach notification letters mailed to impacted individuals; breach notice filed with the attorney general of california, and communication strategy with data breach notification letters mailed to impacted individuals, and third party assistance with kroll (identity theft protection services, call center assistance, credit monitoring), and containment measures with trizetto acted to halt the unauthorized activity and secure its systems, and remediation measures with strengthening security measures, reviewing processes, and communication strategy with individual notification letters to affected patients beginning february 2026, and communication strategy with notifying impacted individuals via mail, and third party assistance with kroll (notification services, call center support, identity theft protection), and remediation measures with strengthening security measures, reviewing processes, and communication strategy with dedicated call center (844-572-2724), notification letters starting february 2026, and third party assistance with trizetto (investigation), and remediation measures with notification to affected individuals, complimentary credit monitoring services, and communication strategy with mail notifications to affected individuals, breach notice filed with california attorney general’s office..
Incident Details
Can you provide details on each incident ?
Title: Cognizant Ransomware Attack
Description: IT services provider Cognizant was hit by the Maze ransomware group in April 2020. The ransomware incident only impacted the internal network including supporting employees' work from home setups. The attack impacted its revenue by the range of $50 million to $70 million for the quarter.
Date Detected: April 2020
Type: Ransomware
Threat Actor: Maze ransomware group
Title: Belcan Data Leak via Open Kibana Instance
Description: The Cybernews research team discovered an open Kibana instance that contained private data on Belcan, its personnel, and internal systems.
Type: Data Leak
Attack Vector: Exposed Kibana Instance
Vulnerability Exploited: Unsecured Kibana Dashboard
Title: TriZetto Provider Solutions Data Breach
Description: 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 breach involved the exposure of protected health information of patients of certain healthcare provider clients.
Date Detected: 2025-10-02
Date Publicly Disclosed: 2025-11-01
Date Resolved: 2025-11-30
Type: Data Breach
Attack Vector: Web Portal Compromise
Threat Actor: Unauthorized Third Party
Title: BACH Data Breach Involving TriZetto Provider Solutions
Description: BACH experienced a data breach where sensitive personal identifiable information and protected health information may have been compromised. The breach involved TriZetto Provider Solutions (TPS), a third-party insurance clearinghouse, which reported suspicious activity in its web portal used by healthcare providers. Unauthorized access occurred between November 2024 and October 2, 2025, exposing personal and health-related data.
Date Detected: 2025-10-02
Date Publicly Disclosed: 2025-12-15
Type: Data Breach
Attack Vector: Third-party web portal compromise
Threat Actor: Unauthorized third party
Title: SFCHC Data Breach Involving TriZetto Provider Solutions
Description: SFCHC reported a data breach where sensitive personal identifiable information and protected health information may have been compromised. The breach was discovered through a notification from OCHIN, SFCHC’s business associate, regarding a security incident involving TriZetto Provider Solutions, a subcontractor of OCHIN. Unauthorized access to sensitive data related to SFCHC patients occurred between November 2024 and October 2, 2025.
Date Detected: 2025-12-12
Type: Data Breach
Attack Vector: Third-Party Compromise
Threat Actor: Unauthorized Third Party
Title: VillageCareMAX Data Breach via Third-Party Administrator TMG Health, Inc.
Description: VillageCareMAX reported a data breach where sensitive personal identifiable information and protected health information may have been compromised. The breach occurred through TMG Health, Inc., a third-party administrator providing call center services, after an unauthorized individual gained access to VillageCareMAX information stored in TMG’s systems.
Date Detected: 2025-09-19
Date Publicly Disclosed: 2026-01-13
Type: Data Breach
Attack Vector: Third-Party Compromise
Threat Actor: Unauthorized Individual
Title: Adapt Integrated Health Care Third-Party Data Security Incident
Description: Adapt Integrated Health Care disclosed a data security incident involving TriZetto, a third-party vendor for its electronic medical record system provider, OCHIN. The breach was discovered when OCHIN notified Adapt that an unauthorized individual had accessed one of TriZetto’s systems. TriZetto acted to halt the unauthorized activity and secure its systems. While Adapt’s internal systems were not directly breached, the incident may have exposed sensitive patient information.
Date Detected: 2025-12-10
Type: Data Breach
Attack Vector: Third-Party Vendor Compromise
Threat Actor: Unauthorized Individual
Title: CommuniCare+OLE Data Breach Affecting Sensitive Patient Information
Description: CommuniCare+OLE, a healthcare provider, disclosed a data breach involving unauthorized access to sensitive personal and health information. An unauthorized individual compromised a system managed by TriZetto, a third-party vendor, leading to potential exposure of names, Social Security numbers, dates of birth, contact information, and health or insurance-related records.
Date Detected: 2025-12-15
Type: Data Breach
Attack Vector: Third-party vendor compromise
Title: TriZetto Vendor Data Breach Exposes Patient Information in Third-Party Incident
Description: Adapt Integrated Health Care disclosed a data breach involving TriZetto, a third-party vendor providing electronic medical record services through OCHIN. An unauthorized individual gained access to one of TriZetto’s systems, potentially compromising patient information.
Date Detected: 2015-12-10
Type: Data Breach
Attack Vector: Unauthorized system access
Title: Petaluma Health Center Data Breach Exposes Sensitive Patient Information
Description: Petaluma Health Center recently disclosed a data breach affecting sensitive personal and health-related information of its patients. On December 15, 2025, the center was alerted by its electronic medical record system, OCHIN, that an unauthorized individual had accessed a system belonging to TriZetto, a third-party vendor working with OCHIN. TriZetto’s investigation confirmed that patient data linked to Petaluma Health Center may have been exposed during the breach. The compromised information varies by individual but includes names, Social Security numbers, dates of birth, contact details, and health or insurance-related data.
Date Detected: 2025-12-15
Type: Data Breach
Attack Vector: Third-party vendor compromise
What are the most common types of attacks the company has faced ?
Common Attack Types: The most common types of attacks the company has faced is Breach.
How does the company identify the attack vectors used in incidents ?
Identification of Attack Vectors: The company identifies the attack vectors used in incidents through Open Kibana Instance, Web portal and TPS web portal.
Impact of the Incidents
What was the impact of each incident ?
Incident : Ransomware COG221714222
Financial Loss: $50 million to $70 million
Systems Affected: Internal network including supporting employees' work from home setups
Revenue Loss: $50 million to $70 million
Incident : Data Leak BEL33411923
Data Compromised: Admin emails, Admin usernames, Admin roles, Internal network addresses, Internal infrastructure hostnames and ip addresses, Internal infrastructure vulnerabilities, Actions taken to remedy/not remedy them
Systems Affected: Internal Systems
Incident : Data Breach TRI1765483872
Data Compromised: Protected Health Information (PHI)
Systems Affected: Web portal used by healthcare provider customers
Operational Impact: Mitigation and investigation efforts required
Brand Reputation Impact: Potential reputational damage to TriZetto and affected healthcare providers
Legal Liabilities: Potential HIPAA violations and regulatory fines
Identity Theft Risk: High (due to exposure of SSNs, Medicare numbers, and other PII)
Payment Information Risk: None (no financial information exposed)
Incident : Data Breach TRIBAC1768252046
Data Compromised: Sensitive personal identifiable information and protected health information
Systems Affected: TriZetto Provider Solutions (TPS) web portal, OCHIN electronic medical record system
Brand Reputation Impact: Potential reputational damage due to data breach
Identity Theft Risk: High (due to exposure of SSNs and personal data)
Incident : Data Breach OCHTRISAN1768259195
Data Compromised: Sensitive personal identifiable information and protected health information
Systems Affected: TriZetto Provider Solutions systems (healthcare eligibility and claims clearinghouse)
Identity Theft Risk: High
Incident : Data Breach VILTMG1768494119
Data Compromised: Sensitive personal identifiable information and protected health information
Systems Affected: TMG Health, Inc. information systems
Identity Theft Risk: High
Incident : Data Breach TRIOCHADA1768955835
Data Compromised: Sensitive patient information
Systems Affected: TriZetto’s systems (third-party vendor)
Identity Theft Risk: Yes
Incident : Data Breach TRIOCHCOM1769016387
Data Compromised: Sensitive personal and health information
Systems Affected: Electronic medical record system
Identity Theft Risk: High
Incident : Data Breach TRIADA1769117193
Data Compromised: Names, Social Security numbers, dates of birth, contact details, health-related information, insurance records
Systems Affected: TriZetto’s systems (third-party vendor)
Identity Theft Risk: High
Incident : Data Breach TRIOCHPET1769201334
Data Compromised: Sensitive personal and health-related information
Systems Affected: TriZetto's system (third-party vendor for OCHIN)
Identity Theft Risk: High
What is the average financial loss per incident ?
Average Financial Loss: The average financial loss per incident is $5.00 million.
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Admin Emails, Admin Usernames, Admin Roles, Internal Network Addresses, Internal Infrastructure Hostnames And Ip Addresses, Internal Infrastructure Vulnerabilities, Actions Taken To Remedy/Not Remedy Them, , Names, Addresses, Dates Of Birth, Social Security Numbers, Health Insurance Member Numbers, Medicare Beneficiary Numbers, Health Insurer Names, Demographic Health Information, Health Insurance Information, , Personal Identifiable Information (Pii), Protected Health Information (Phi), , Personal Identifiable Information, Protected Health Information, , Personal Identifiable Information, Protected Health Information, , Names, Social Security Numbers, Dates Of Birth, Contact Information, Health-Related Details, Insurance Details, , Names, Social Security Numbers, Dates Of Birth, Contact Information, Health Records, Insurance-Related Records, , Patient information, Names, Social Security Numbers, Dates Of Birth, Contact Details, Health Or Insurance-Related Data and .
Which entities were affected by each incident ?
Incident : Ransomware COG221714222
Entity Name: Cognizant
Entity Type: IT services provider
Industry: Information Technology
Incident : Data Breach TRI1765483872
Entity Name: TriZetto Provider Solutions
Entity Type: Business Associate (Healthcare Revenue Management Services)
Industry: Healthcare IT
Customers Affected: Healthcare provider clients (physicians, hospitals, health systems)
Incident : Data Breach TRIBAC1768252046
Entity Name: BACH
Entity Type: Healthcare Provider
Industry: Healthcare
Customers Affected: Individuals whose data was exposed
Incident : Data Breach TRIBAC1768252046
Entity Name: TriZetto Provider Solutions (TPS)
Entity Type: Third-party insurance clearinghouse
Industry: Healthcare IT
Customers Affected: Healthcare provider customers, including BACH
Incident : Data Breach OCHTRISAN1768259195
Entity Name: San Francisco Community Health Center (SFCHC)
Entity Type: Healthcare Provider
Industry: Healthcare
Location: San Francisco, California, USA
Customers Affected: Patients of SFCHC
Incident : Data Breach OCHTRISAN1768259195
Entity Name: TriZetto Provider Solutions
Entity Type: Healthcare Clearinghouse
Industry: Healthcare IT
Incident : Data Breach OCHTRISAN1768259195
Entity Name: OCHIN
Entity Type: Business Associate
Industry: Healthcare IT
Incident : Data Breach VILTMG1768494119
Entity Name: VillageCareMAX
Entity Type: Healthcare Provider
Industry: Healthcare
Location: United States
Customers Affected: Patients
Incident : Data Breach TRIOCHADA1768955835
Entity Name: Adapt Integrated Health Care
Entity Type: Healthcare Provider
Industry: Healthcare
Customers Affected: Not all patients (subset of patients)
Incident : Data Breach TRIOCHADA1768955835
Entity Name: TriZetto
Entity Type: Third-Party Vendor
Industry: Healthcare IT
Incident : Data Breach TRIOCHADA1768955835
Entity Name: OCHIN
Entity Type: Electronic Medical Record System Provider
Industry: Healthcare IT
Incident : Data Breach TRIOCHCOM1769016387
Entity Name: CommuniCare+OLE
Entity Type: Healthcare Provider
Industry: Healthcare
Customers Affected: Unknown (varies by individual)
Incident : Data Breach TRIADA1769117193
Entity Name: Adapt Integrated Health Care
Entity Type: Healthcare Provider
Industry: Healthcare
Customers Affected: Potentially some patients (not all)
Incident : Data Breach TRIADA1769117193
Entity Name: TriZetto
Entity Type: Third-Party Vendor
Industry: Healthcare IT
Incident : Data Breach TRIADA1769117193
Entity Name: OCHIN
Entity Type: Subcontractor/Vendor
Industry: Healthcare IT
Incident : Data Breach TRIOCHPET1769201334
Entity Name: Petaluma Health Center
Entity Type: Healthcare Provider
Industry: Healthcare
Location: Petaluma, California, USA
Customers Affected: Patients
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Data Leak BEL33411923
Containment Measures: Precautions in place to deal with the problem
Incident : Data Breach TRI1765483872
Incident Response Plan Activated: Yes
Third Party Assistance: Mandiant (cybersecurity firm)
Containment Measures: Immediate action to secure the web portal
Remediation Measures: Eradication of threat actor, forensic investigation, and system review
Recovery Measures: Review of compromised data and notification of affected clients
Communication Strategy: Notifications to affected healthcare clients, offer to handle breach notifications on their behalf
Incident : Data Breach TRIBAC1768252046
Third Party Assistance: TPS launched an investigation
Remediation Measures: Review of impacted data, identification of affected individuals
Recovery Measures: Provision of complimentary credit monitoring services
Communication Strategy: Breach notice posted on BACH's website, notification letters to affected individuals
Incident : Data Breach OCHTRISAN1768259195
Third Party Assistance: TriZetto launched an investigation
Remediation Measures: Review of impacted data, identification of affected individuals, and mailing of data breach notification letters
Communication Strategy: Data breach notification letters mailed to impacted individuals; breach notice filed with the Attorney General of California
Incident : Data Breach VILTMG1768494119
Communication Strategy: Data breach notification letters mailed to impacted individuals
Incident : Data Breach TRIOCHADA1768955835
Third Party Assistance: Kroll (identity theft protection services, call center assistance, credit monitoring)
Containment Measures: TriZetto acted to halt the unauthorized activity and secure its systems
Remediation Measures: Strengthening security measures, reviewing processes
Communication Strategy: Individual notification letters to affected patients beginning February 2026
Incident : Data Breach TRIOCHCOM1769016387
Communication Strategy: Notifying impacted individuals via mail
Incident : Data Breach TRIADA1769117193
Third Party Assistance: Kroll (notification services, call center support, identity theft protection)
Remediation Measures: Strengthening security measures, reviewing processes
Communication Strategy: Dedicated call center (844-572-2724), notification letters starting February 2026
Incident : Data Breach TRIOCHPET1769201334
Third Party Assistance: TriZetto (investigation)
Remediation Measures: Notification to affected individuals, complimentary credit monitoring services
Communication Strategy: Mail notifications to affected individuals, breach notice filed with California Attorney General’s office
What is the company's incident response plan?
Incident Response Plan: The company's incident response plan is described as Yes.
How does the company involve third-party assistance in incident response ?
Third-Party Assistance: The company involves third-party assistance in incident response through Mandiant (cybersecurity firm), TPS launched an investigation, TriZetto launched an investigation, Kroll (identity theft protection services, call center assistance, credit monitoring), Kroll (notification services, call center support, identity theft protection), TriZetto (investigation).
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Leak BEL33411923
Type of Data Compromised: Admin emails, Admin usernames, Admin roles, Internal network addresses, Internal infrastructure hostnames and ip addresses, Internal infrastructure vulnerabilities, Actions taken to remedy/not remedy them
Incident : Data Breach TRI1765483872
Type of Data Compromised: Names, Addresses, Dates of birth, Social security numbers, Health insurance member numbers, Medicare beneficiary numbers, Health insurer names, Demographic health information, Health insurance information
Sensitivity of Data: High (Protected Health Information and Personally Identifiable Information)
File Types Exposed: Eligibility transaction reports
Personally Identifiable Information: Yes
Incident : Data Breach TRIBAC1768252046
Type of Data Compromised: Personal identifiable information (pii), Protected health information (phi)
Sensitivity of Data: High (SSNs, health/insurance information)
Personally Identifiable Information: NameSocial Security numberDate of birthContact information
Incident : Data Breach OCHTRISAN1768259195
Type of Data Compromised: Personal identifiable information, Protected health information
Sensitivity of Data: High
Personally Identifiable Information: NameSocial Security numberAddressDate of birthHealth insurance information (member number, health insurer name, provider name, primary insured and dependents)
Incident : Data Breach VILTMG1768494119
Type of Data Compromised: Personal identifiable information, Protected health information
Sensitivity of Data: High
Personally Identifiable Information: NameSocial Security numberMember numberHealth information
Incident : Data Breach TRIOCHADA1768955835
Type of Data Compromised: Names, Social security numbers, Dates of birth, Contact information, Health-related details, Insurance details
Sensitivity of Data: High (Personally Identifiable Information and Protected Health Information)
Personally Identifiable Information: Yes
Incident : Data Breach TRIOCHCOM1769016387
Type of Data Compromised: Names, Social security numbers, Dates of birth, Contact information, Health records, Insurance-related records
Sensitivity of Data: High
Personally Identifiable Information: Yes
Incident : Data Breach TRIADA1769117193
Type of Data Compromised: Patient information
Sensitivity of Data: High (PII, health records, SSNs)
Personally Identifiable Information: Names, Social Security numbers, dates of birth, contact details, insurance records
Incident : Data Breach TRIOCHPET1769201334
Type of Data Compromised: Names, Social security numbers, Dates of birth, Contact details, Health or insurance-related data
Sensitivity of Data: High
Personally Identifiable Information: Yes
What measures does the company take to prevent data exfiltration ?
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: Eradication of threat actor, forensic investigation, and system review, Review of impacted data, identification of affected individuals, Review of impacted data, identification of affected individuals, and mailing of data breach notification letters, Strengthening security measures, reviewing processes, Strengthening security measures, reviewing processes, Notification to affected individuals, complimentary credit monitoring services.
How does the company handle incidents involving personally identifiable information (PII) ?
Handling of PII Incidents: The company handles incidents involving personally identifiable information (PII) through by precautions in place to deal with the problem, immediate action to secure the web portal and trizetto acted to halt the unauthorized activity and secure its systems.
Ransomware Information
Was ransomware involved in any of the incidents ?
Incident : Ransomware COG221714222
Ransomware Strain: Maze
How does the company recover data encrypted by ransomware ?
Data Recovery from Ransomware: The company recovers data encrypted by ransomware through Review of compromised data and notification of affected clients, Provision of complimentary credit monitoring services.
Regulatory Compliance
Were there any regulatory violations and fines imposed for each incident ?
Incident : Data Breach TRI1765483872
Regulations Violated: HIPAA Breach Notification Rule,
Regulatory Notifications: HHS’ Office for Civil Rights, state regulators, and media outlets (offered by TriZetto)
Incident : Data Breach TRIBAC1768252046
Regulations Violated: HIPAA (potential),
Incident : Data Breach OCHTRISAN1768259195
Regulations Violated: HIPAA,
Regulatory Notifications: Breach notice filed with the Attorney General of California
Incident : Data Breach VILTMG1768494119
Regulations Violated: HIPAA,
Regulatory Notifications: Attorney General of the Commonwealth of Massachusetts
Incident : Data Breach TRIOCHCOM1769016387
Regulations Violated: HIPAA,
Regulatory Notifications: Filed with the California Attorney General’s office
Incident : Data Breach TRIOCHPET1769201334
Regulations Violated: HIPAA (potential),
Regulatory Notifications: California Attorney General’s office
Lessons Learned and Recommendations
What lessons were learned from each incident ?
Incident : Data Breach TRIADA1769117193
Lessons Learned: Highlights risks of third-party vendor vulnerabilities in healthcare data security
What recommendations were made to prevent future incidents ?
Incident : Data Breach OCHTRISAN1768259195
Recommendations: Provision of complimentary credit monitoring services to affected individuals
Incident : Data Breach VILTMG1768494119
Recommendations: Providing complimentary credit monitoring services to affected individuals
What are the key lessons learned from past incidents ?
Key Lessons Learned: The key lessons learned from past incidents are Highlights risks of third-party vendor vulnerabilities in healthcare data security.
What recommendations has the company implemented to improve cybersecurity ?
Implemented Recommendations: The company has implemented the following recommendations to improve cybersecurity: Providing complimentary credit monitoring services to affected individuals and Provision of complimentary credit monitoring services to affected individuals.
References
Where can I find more information about each incident ?
Incident : Data Leak BEL33411923
Source: Cybernews
Incident : Data Breach TRI1765483872
Source: HIPAA Journal
Incident : Data Breach TRIBAC1768252046
Source: BACH Breach Notice
Incident : Data Breach OCHTRISAN1768259195
Source: Attorney General of California Breach Notice
Incident : Data Breach VILTMG1768494119
Source: Attorney General of the Commonwealth of Massachusetts
Incident : Data Breach TRIOCHADA1768955835
Source: Adapt Integrated Health Care Disclosure
Incident : Data Breach TRIOCHCOM1769016387
Source: California Attorney General’s office
Incident : Data Breach TRIADA1769117193
Source: Incident disclosure by Adapt Integrated Health Care
Incident : Data Breach TRIOCHPET1769201334
Source: Petaluma Health Center Breach Notice
Where can stakeholders find additional resources on cybersecurity best practices ?
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: Cybernews, and Source: HIPAA Journal, and Source: BACH Breach Notice, and Source: Attorney General of California Breach Notice, and Source: Attorney General of the Commonwealth of Massachusetts, and Source: Adapt Integrated Health Care Disclosure, and Source: California Attorney General’s office, and Source: Incident disclosure by Adapt Integrated Health Care, and Source: Petaluma Health Center Breach Notice.
Investigation Status
What is the current status of the investigation for each incident ?
Incident : Data Leak BEL33411923
Investigation Status: Resolved
Incident : Data Breach TRI1765483872
Investigation Status: Completed (forensic investigation concluded)
Incident : Data Breach TRIBAC1768252046
Investigation Status: Ongoing (as of disclosure)
Incident : Data Breach OCHTRISAN1768259195
Investigation Status: Ongoing
Incident : Data Breach VILTMG1768494119
Investigation Status: Completed
Incident : Data Breach TRIOCHADA1768955835
Investigation Status: Ongoing
Incident : Data Breach TRIOCHCOM1769016387
Investigation Status: Ongoing
Incident : Data Breach TRIOCHPET1769201334
Investigation Status: Ongoing
How does the company communicate the status of incident investigations to stakeholders ?
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through Notifications to affected healthcare clients, offer to handle breach notifications on their behalf, Breach notice posted on BACH's website, notification letters to affected individuals, Data breach notification letters mailed to impacted individuals; breach notice filed with the Attorney General of California, Data breach notification letters mailed to impacted individuals, Individual notification letters to affected patients beginning February 2026, Notifying impacted individuals via mail, Dedicated call center (844-572-2724), notification letters starting February 2026, Mail notifications to affected individuals and breach notice filed with California Attorney General’s office.
Stakeholder and Customer Advisories
Were there any advisories issued to stakeholders or customers for each incident ?
Incident : Data Breach TRI1765483872
Stakeholder Advisories: Notifications to affected healthcare clients with lists of affected individuals and compromised data
Customer Advisories: Offer to handle breach notifications for affected individuals, including credit monitoring and identity theft restoration services
Incident : Data Breach TRIBAC1768252046
Customer Advisories: Affected individuals notified with details of exposed data and offered credit monitoring services
Incident : Data Breach OCHTRISAN1768259195
Customer Advisories: Data breach notification letters mailed to impacted individuals with details of the incident and complimentary credit monitoring services
Incident : Data Breach VILTMG1768494119
Customer Advisories: Data breach notification letters with details of impacted information
Incident : Data Breach TRIOCHADA1768955835
Customer Advisories: Patients may contact TriZetto’s dedicated call center at (844) 572-2724 or Heather Donohue, COO of TriZetto Provider Solutions, at (314) 802-6789 for further details.
Incident : Data Breach TRIOCHCOM1769016387
Customer Advisories: Notifying impacted individuals via mail with specifics on compromised data
Incident : Data Breach TRIADA1769117193
Customer Advisories: Notification letters to be sent starting February 2026, call center support available
Incident : Data Breach TRIOCHPET1769201334
Customer Advisories: Mail notifications to affected individuals
What advisories does the company provide to stakeholders and customers following an incident ?
Advisories Provided: The company provides the following advisories to stakeholders and customers following an incident: were Notifications to affected healthcare clients with lists of affected individuals and compromised data, Offer to handle breach notifications for affected individuals, including credit monitoring and identity theft restoration services, Affected individuals notified with details of exposed data and offered credit monitoring services, Data breach notification letters mailed to impacted individuals with details of the incident and complimentary credit monitoring services, Data breach notification letters with details of impacted information, Patients may contact TriZetto’s dedicated call center at (844) 572-2724 or Heather Donohue, COO of TriZetto Provider Solutions, at (314) 802-6789 for further details., Notifying impacted individuals via mail with specifics on compromised data, Notification letters to be sent starting February 2026, call center support available and Mail notifications to affected individuals.
Initial Access Broker
How did the initial access broker gain entry for each incident ?
Incident : Data Leak BEL33411923
Entry Point: Open Kibana Instance
Incident : Data Breach TRI1765483872
Entry Point: Web portal
Reconnaissance Period: November 2024 to October 2025
High Value Targets: Historical eligibility transaction reports containing PHI
Data Sold on Dark Web: Historical eligibility transaction reports containing PHI
Incident : Data Breach TRIBAC1768252046
Entry Point: TPS web portal
Post-Incident Analysis
What were the root causes and corrective actions taken for each incident ?
Incident : Data Leak BEL33411923
Root Causes: Unsecured Kibana Dashboard
Corrective Actions: Precautions in place to deal with the problem
Incident : Data Breach TRI1765483872
Root Causes: Unauthorized access to web portal and prolonged undetected access to historical reports
Corrective Actions: Enhanced security measures (details not specified)
Incident : Data Breach TRIBAC1768252046
Root Causes: Third-party vendor compromise (TPS web portal vulnerability)
Incident : Data Breach VILTMG1768494119
Root Causes: Unauthorized access to third-party systems (TMG Health, Inc.)
Incident : Data Breach TRIADA1769117193
Root Causes: Third-party vendor vulnerability (TriZetto system access)
Corrective Actions: Strengthening security measures, reviewing processes with OCHIN
What is the company's process for conducting post-incident analysis ?
Post-Incident Analysis Process: The company's process for conducting post-incident analysis is described as Mandiant (cybersecurity firm), TPS launched an investigation, TriZetto launched an investigation, Kroll (identity theft protection services, call center assistance, credit monitoring), Kroll (notification services, call center support, identity theft protection), TriZetto (investigation).
What corrective actions has the company taken based on post-incident analysis ?
Corrective Actions Taken: The company has taken the following corrective actions based on post-incident analysis: Precautions in place to deal with the problem, Enhanced security measures (details not specified), Strengthening security measures, reviewing processes with OCHIN.
Additional Questions
General Information
Who was the attacking group in the last incident ?
Last Attacking Group: The attacking group in the last incident were an Maze ransomware group, Unauthorized Third Party, Unauthorized third party, Unauthorized Third Party, Unauthorized Individual and Unauthorized Individual.
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on April 2020.
What was the most recent incident publicly disclosed ?
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2026-01-13.
What was the most recent incident resolved ?
Most Recent Incident Resolved: The most recent incident resolved was on 2025-11-30.
Impact of the Incidents
What was the highest financial loss from an incident ?
Highest Financial Loss: The highest financial loss from an incident was $50 million to $70 million.
What was the most significant data compromised in an incident ?
Most Significant Data Compromised: The most significant data compromised in an incident were Admin emails, Admin usernames, Admin roles, Internal network addresses, Internal infrastructure hostnames and IP addresses, Internal infrastructure vulnerabilities, Actions taken to remedy/not remedy them, , Protected Health Information (PHI), Sensitive personal identifiable information and protected health information, Sensitive personal identifiable information and protected health information, Sensitive personal identifiable information and protected health information, Sensitive patient information, Sensitive personal and health information, Names, Social Security numbers, dates of birth, contact details, health-related information, insurance records and Sensitive personal and health-related information.
Response to the Incidents
What third-party assistance was involved in the most recent incident ?
Third-Party Assistance in Most Recent Incident: The third-party assistance involved in the most recent incident was Mandiant (cybersecurity firm), TPS launched an investigation, TriZetto launched an investigation, Kroll (identity theft protection services, call center assistance, credit monitoring), Kroll (notification services, call center support, identity theft protection), TriZetto (investigation).
What containment measures were taken in the most recent incident ?
Containment Measures in Most Recent Incident: The containment measures taken in the most recent incident were Precautions in place to deal with the problem, Immediate action to secure the web portal and TriZetto acted to halt the unauthorized activity and secure its systems.
Data Breach Information
What was the most sensitive data compromised in a breach ?
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were Names, Social Security numbers, dates of birth, contact details, health-related information, insurance records, Admin roles, Admin usernames, Sensitive patient information, Internal infrastructure hostnames and IP addresses, Internal infrastructure vulnerabilities, Admin emails, Sensitive personal identifiable information and protected health information, Sensitive personal and health-related information, Sensitive personal and health information, Internal network addresses, Protected Health Information (PHI) and Actions taken to remedy/not remedy them.
Lessons Learned and Recommendations
What was the most significant lesson learned from past incidents ?
Most Significant Lesson Learned: The most significant lesson learned from past incidents was Highlights risks of third-party vendor vulnerabilities in healthcare data security.
What was the most significant recommendation implemented to improve cybersecurity ?
Most Significant Recommendation Implemented: The most significant recommendation implemented to improve cybersecurity was Providing complimentary credit monitoring services to affected individuals and Provision of complimentary credit monitoring services to affected individuals.
References
What is the most recent source of information about an incident ?
Most Recent Source: The most recent source of information about an incident are Adapt Integrated Health Care Disclosure, Cybernews, HIPAA Journal, BACH Breach Notice, California Attorney General’s office, Attorney General of California Breach Notice, Petaluma Health Center Breach Notice, Attorney General of the Commonwealth of Massachusetts and Incident disclosure by Adapt Integrated Health Care.
Investigation Status
What is the current status of the most recent investigation ?
Current Status of Most Recent Investigation: The current status of the most recent investigation is Resolved.
Stakeholder and Customer Advisories
What was the most recent stakeholder advisory issued ?
Most Recent Stakeholder Advisory: The most recent stakeholder advisory issued was Notifications to affected healthcare clients with lists of affected individuals and compromised data, .
What was the most recent customer advisory issued ?
Most Recent Customer Advisory: The most recent customer advisory issued were an Offer to handle breach notifications for affected individuals, including credit monitoring and identity theft restoration services, Affected individuals notified with details of exposed data and offered credit monitoring services, Data breach notification letters mailed to impacted individuals with details of the incident and complimentary credit monitoring services, Data breach notification letters with details of impacted information, Patients may contact TriZetto’s dedicated call center at (844) 572-2724 or Heather Donohue, COO of TriZetto Provider Solutions, at (314) 802-6789 for further details., Notifying impacted individuals via mail with specifics on compromised data, Notification letters to be sent starting February 2026, call center support available and Mail notifications to affected individuals.
Initial Access Broker
What was the most recent entry point used by an initial access broker ?
Most Recent Entry Point: The most recent entry point used by an initial access broker were an Open Kibana Instance, Web portal and TPS web portal.
What was the most recent reconnaissance period for an incident ?
Most Recent Reconnaissance Period: The most recent reconnaissance period for an incident was November 2024 to October 2025.
Post-Incident Analysis
What was the most significant root cause identified in post-incident analysis ?
Most Significant Root Cause: The most significant root cause identified in post-incident analysis was Unsecured Kibana Dashboard, Unauthorized access to web portal and prolonged undetected access to historical reports, Third-party vendor compromise (TPS web portal vulnerability), Unauthorized access to third-party systems (TMG Health, Inc.), Third-party vendor vulnerability (TriZetto system access).
What was the most significant corrective action taken based on post-incident analysis ?
Most Significant Corrective Action: The most significant corrective action taken based on post-incident analysis was Precautions in place to deal with the problem, Enhanced security measures (details not specified), Strengthening security measures, reviewing processes with OCHIN.
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