Company Details
tenet-healthcare
44,049
230,465
62
tenethealth.com
320
TEN_1374687
Completed

Tenet Healthcare Company CyberSecurity Posture
tenethealth.comTenet Healthcare Corporation (NYSE: THC) is a diversified healthcare services company headquartered in Dallas. Our care delivery network includes United Surgical Partners International, the largest ambulatory platform in the country, which operates ambulatory surgery centers and surgical hospitals. We also operate a national portfolio of acute care and specialty hospitals, other outpatient facilities, a network of leading employed physicians and a global business center in Manila, Philippines. Our Conifer Health Solutions subsidiary provides revenue cycle management and value-based care services to hospitals, health systems, physician practices, employers, and other clients. Across the Tenet enterprise, we are united by our mission to deliver quality, compassionate care in the communities we serve. For more information, please visit www.tenethealth.com.
Company Details
tenet-healthcare
44,049
230,465
62
tenethealth.com
320
TEN_1374687
Completed
Between 800 and 849

Tenet Healthcare Global Score (TPRM)XXXX

Description: Baptist Health System suffered a data breach incident after an unauthorized party gained access to the company’s computer network after installing a line of malicious code on the System’s website. The breach compromised the full names, dates of birth, addresses, Social Security numbers, health insurance information, medical information and billing information of more than 1.2 million patients in Texas alone and many more in other areas. The health system suspended the affected systems to restrict further access and began working with a cybersecurity firm to investigate the incident.
Description: Conifer Revenue Cycle Solutions, LLC (“we” or “Conifer”), a provider of revenue cycle management and other administrative services to healthcare providers, suffered a cybersecurity incident that affected its users' personal information. An unauthorized third party gained access to a Microsoft Office 365-hosted business email account and compromised certain information. The exposed information involved information to identify the individual (such as full name, date of birth, and address); (2) Social Security number, driver’s license/state ID number, and/or financial account information; (3) medical and/or treatment information (such as medical record number, dates of service, provider and facility, diagnosis or symptom information, and prescription/medication); (4) health insurance information (such as payor name and subscriber/Medicare/Medicaid number); and (5) billing and claims information. However, upon revelation, the email account was separate from Conifer’s internal network and systems, and those who were affected were notified.
Description: The Vermont Office of the Attorney General disclosed a data breach affecting **Conifer Revenue Cycle Solutions, LLC**, discovered on **April 14, 2022**, but reported on **September 30, 2022**. The incident involved **unauthorized access to a Microsoft Office 365-hosted email account**, potentially compromising **personal information** of individuals. The exposed data included **sensitive medical and health insurance details**, raising concerns about privacy violations and potential misuse of protected health information (PHI). While the exact number of affected individuals was not specified, the breach highlights vulnerabilities in third-party vendor systems handling healthcare data. The delayed detection and reporting further exacerbate risks, as prolonged exposure increases the likelihood of fraud, identity theft, or secondary attacks leveraging the stolen information. The breach underscores the critical need for robust email security measures and timely incident response in sectors managing highly sensitive data.
Description: The Detroit Medical Center suffered from a data breach of health information that exposed about 1,529 patients. The DMC notified to the individuals whose data was compromised and offered credit monitoring for affected patients.
Description: The California Office of the Attorney General reported on April 23, 2021, that Doctors Medical Center of Modesto experienced a data breach involving unsecured Protected Health Information (PHI) due to a misconfigured software update by the vendor Medifies on December 1, 2019. The breach potentially exposed various patient details, including names, addresses, and procedure information, though no Social Security numbers or financial information were involved.
Description: Good Samaritan and the St. Mary’s Medical Center in West Palm Beach suffered a ransomware attack that crippled its phone and computer systems. The attack affect many of its systems and disrupted its acute care operations. However, the hospital staff did not clear if any patient data was compromised or if ransom was demanded.


No incidents recorded for Tenet Healthcare in 2025.
No incidents recorded for Tenet Healthcare in 2025.
No incidents recorded for Tenet Healthcare in 2025.
Tenet Healthcare cyber incidents detection timeline including parent company and subsidiaries

Tenet Healthcare Corporation (NYSE: THC) is a diversified healthcare services company headquartered in Dallas. Our care delivery network includes United Surgical Partners International, the largest ambulatory platform in the country, which operates ambulatory surgery centers and surgical hospitals. We also operate a national portfolio of acute care and specialty hospitals, other outpatient facilities, a network of leading employed physicians and a global business center in Manila, Philippines. Our Conifer Health Solutions subsidiary provides revenue cycle management and value-based care services to hospitals, health systems, physician practices, employers, and other clients. Across the Tenet enterprise, we are united by our mission to deliver quality, compassionate care in the communities we serve. For more information, please visit www.tenethealth.com.


GeBBS Healthcare Solutions is a KLAS rated leading provider of Revenue Cycle Management (RCM) services and Risk Adjustment solutions. GeBBS’ innovative technology, combined with over 14,000-strong global workforce, helps clients improve financial performance, adhere to compliance, and enhance the pa
Cleveland Clinic, located in Cleveland, Ohio, is a not-for-profit, multispecialty academic medical center that integrates clinical and hospital care with research and education. Founded in 1921 by four renowned physicians with a vision of providing outstanding patient care based upon the principl

The Hospital Authority (HA) is a statutory body established under the Hospital Authority Ordinance in 1990. We have been responsible for managing Hong Kong's public hospitals services since December 1991. We are accountable to the Hong Kong Special Administrative Region Government through the Secret

Founded in 2003, Omega Healthcare Management Services® (Omega Healthcare) empowers healthcare to thrive via intelligent solutions that optimize revenue cycle operations, administrative workflows, care coordination, and clinical research on a global scale. The company works with providers, payers, li

King Faisal Specialist Hospital and Research Centre (KFSH&RC) is a 2415 -bed tertiary/quaternary care hospital with facilities in Riyadh, Jeddah & Madinah in the Kingdom of Saudi Arabia. offering Established in 1970 on land donated by the late King Faisal Bin Abdulaziz, in the capital city of Riya

Region Skåne, or Skåne Regional Council, is the self-governing authority of Skåne, the southernmost county of Sweden. Region Skåne has its head office in the city of Kristianstad and has work places in every municipality in Skåne. Region Skåne is responsible for healthcare and medical services, t

Lehigh Valley Health Network (LVHN) is proudly part of Jefferson Health, forming a leading integrated academic health care delivery system. With 65,000 colleagues, 32 hospitals and over 700 sites of care across the Lehigh Valley, northeastern Pennsylvania, Delaware Valley and southern New Jersey. L

The University of Maryland Medical System (UMMS) was created in 1984 when the state-owned University Hospital became a private, nonprofit organization. It has evolved into a multi-hospital system with academic, community and specialty service missions reaching every part of the state and beyond. UM

UMass Memorial Health is the health and wellness partner of the people of Central Massachusetts. Through pain and pandemics, our commitment to our communities never wanes. We use knowledge and innovation to create breakthrough medicine, to create jobs, and to make life better for those we serve. We
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Here are the worldwide cybersecurity job openings available as of September 30, 2025, including on-site, hybrid, and remote roles.
Tenet Healthcare (THC) concluded the recent trading session at $182.82, signifying a -2.1% move from its prior day's close.
A Tenet Healthcare Corp. employee filed a proposed class action accusing the health-care services company of mismanaging its workers' 401(k)...
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Tenet Healthcare · Ticker:THC · Company type:Public · Revenues ($M):$20,665 · Profits ($M):$3,200 · Market value ($M):$12,794 · Number of...
The Tennessee Department of Finance and Administration has appointed Kristin Darby as the state's new Chief Information Officer.
Kristin Darby has been named to replace Stephanie Dedmon, who is set to retire at the end of June after serving as Tennessee's CIO since 2018.
The deal comes weeks after Commure partnered with another for-profit provider, HCA Healthcare, and acquired AI documentation firm Augmedix.

Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of Tenet Healthcare is http://www.tenethealth.com.
According to Rankiteo, Tenet Healthcare’s AI-generated cybersecurity score is 801, reflecting their Good security posture.
According to Rankiteo, Tenet Healthcare currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, Tenet Healthcare is not certified under SOC 2 Type 1.
According to Rankiteo, Tenet Healthcare does not hold a SOC 2 Type 2 certification.
According to Rankiteo, Tenet Healthcare is not listed as GDPR compliant.
According to Rankiteo, Tenet Healthcare does not currently maintain PCI DSS compliance.
According to Rankiteo, Tenet Healthcare is not compliant with HIPAA regulations.
According to Rankiteo,Tenet Healthcare is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Tenet Healthcare operates primarily in the Hospitals and Health Care industry.
Tenet Healthcare employs approximately 44,049 people worldwide.
Tenet Healthcare presently has no subsidiaries across any sectors.
Tenet Healthcare’s official LinkedIn profile has approximately 230,465 followers.
Tenet Healthcare is classified under the NAICS code 62, which corresponds to Health Care and Social Assistance.
Yes, Tenet Healthcare has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/tenet-healthcare-corporation.
Yes, Tenet Healthcare maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/tenet-healthcare.
As of December 11, 2025, Rankiteo reports that Tenet Healthcare has experienced 6 cybersecurity incidents.
Tenet Healthcare has an estimated 30,928 peer or competitor companies worldwide.
Incident Types: The types of cybersecurity incidents that have occurred include Breach and Ransomware.
Detection and Response: The company detects and responds to cybersecurity incidents through an third party assistance with cybersecurity firm, and containment measures with suspended affected systems, and communication strategy with notified affected individuals and offered credit monitoring, and communication strategy with public disclosure via vermont ag office..
Title: Ransomware Attack on Good Samaritan and St. Mary’s Medical Center
Description: Good Samaritan and the St. Mary’s Medical Center in West Palm Beach suffered a ransomware attack that crippled its phone and computer systems. The attack affected many of its systems and disrupted its acute care operations. However, the hospital staff did not confirm if any patient data was compromised or if ransom was demanded.
Type: Ransomware
Title: Baptist Health System Data Breach
Description: Baptist Health System suffered a data breach incident after an unauthorized party gained access to the company’s computer network after installing a line of malicious code on the System’s website. The breach compromised the full names, dates of birth, addresses, Social Security numbers, health insurance information, medical information and billing information of more than 1.2 million patients in Texas alone and many more in other areas. The health system suspended the affected systems to restrict further access and began working with a cybersecurity firm to investigate the incident.
Type: Data Breach
Attack Vector: Malicious Code Injection
Threat Actor: Unauthorized Party
Title: Detroit Medical Center Data Breach
Description: The Detroit Medical Center suffered from a data breach of health information that exposed about 1,529 patients.
Type: Data Breach
Title: Conifer Revenue Cycle Solutions Data Breach
Description: Conifer Revenue Cycle Solutions, LLC, a provider of revenue cycle management and other administrative services to healthcare providers, suffered a cybersecurity incident that affected its users' personal information. An unauthorized third party gained access to a Microsoft Office 365-hosted business email account and compromised certain information.
Type: Data Breach
Attack Vector: Email Account Compromise
Vulnerability Exploited: Unauthorized Access to Email Account
Threat Actor: Unauthorized Third Party
Title: Data Breach at Doctors Medical Center of Modesto
Description: The California Office of the Attorney General reported on April 23, 2021, that Doctors Medical Center of Modesto experienced a data breach involving unsecured Protected Health Information (PHI) due to a misconfigured software update by the vendor Medifies on December 1, 2019. The breach potentially exposed various patient details, including names, addresses, and procedure information, though no Social Security numbers or financial information were involved.
Date Detected: 2021-04-23
Date Publicly Disclosed: 2021-04-23
Type: Data Breach
Attack Vector: Misconfigured Software Update
Vulnerability Exploited: Misconfiguration
Threat Actor: Medifies (vendor)
Title: Data Breach at Conifer Revenue Cycle Solutions, LLC
Description: The Vermont Office of the Attorney General reported a data breach involving Conifer Revenue Cycle Solutions, LLC. The breach involved unauthorized access to a Microsoft Office 365-hosted email account and may have affected personal information of individuals, including medical and health insurance information.
Date Detected: 2022-04-14
Date Publicly Disclosed: 2022-09-30
Type: Data Breach
Attack Vector: Unauthorized Access (Email Account Compromise)
Common Attack Types: The most common types of attacks the company has faced is Breach.
Identification of Attack Vectors: The company identifies the attack vectors used in incidents through Malicious Code on Website, Microsoft Office 365-hosted Business Email Account and Microsoft Office 365 Email Account.

Systems Affected: phonecomputer
Operational Impact: disrupted acute care operations

Data Compromised: Full names, Dates of birth, Addresses, Social security numbers, Health insurance information, Medical information, Billing information

Data Compromised: Health information

Data Compromised: Personal information, Social security numbers, Driver's license/state id numbers, Financial account information, Medical information, Health insurance information, Billing and claims information
Systems Affected: Microsoft Office 365-hosted Business Email Account

Data Compromised: Names, Addresses, Procedure information

Data Compromised: Medical information, Health insurance information
Systems Affected: Microsoft Office 365 Email Account
Identity Theft Risk: Potential (due to compromised PII)
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Full Names, Dates Of Birth, Addresses, Social Security Numbers, Health Insurance Information, Medical Information, Billing Information, , Health Information, Personal Information, Social Security Numbers, Driver'S License/State Id Numbers, Financial Account Information, Medical Information, Health Insurance Information, Billing And Claims Information, , Names, Addresses, Procedure Information, , Personal Information, Medical Information, Health Insurance Information and .

Entity Name: ['Good Samaritan', 'St. Mary’s Medical Center']
Entity Type: Healthcare
Industry: Healthcare
Location: West Palm Beach

Entity Name: Baptist Health System
Entity Type: Health System
Industry: Healthcare
Location: TexasOther areas
Customers Affected: More than 1.2 million patients in Texas alone

Entity Name: Detroit Medical Center
Entity Type: Healthcare Provider
Industry: Healthcare
Location: Detroit, MI
Customers Affected: 1529

Entity Name: Conifer Revenue Cycle Solutions, LLC
Entity Type: Company
Industry: Healthcare

Entity Name: Doctors Medical Center of Modesto
Entity Type: Healthcare
Industry: Healthcare
Location: Modesto, California

Entity Name: Conifer Revenue Cycle Solutions, LLC
Entity Type: Private Company
Industry: Healthcare Revenue Cycle Management

Entity Name: Vermont Office of the Attorney General
Entity Type: Government Agency
Industry: Legal/Regulatory
Location: Vermont, USA

Third Party Assistance: Cybersecurity Firm
Containment Measures: Suspended affected systems

Communication Strategy: Notified affected individuals and offered credit monitoring

Communication Strategy: Public Disclosure via Vermont AG Office
Third-Party Assistance: The company involves third-party assistance in incident response through Cybersecurity Firm.

Type of Data Compromised: Full names, Dates of birth, Addresses, Social security numbers, Health insurance information, Medical information, Billing information
Number of Records Exposed: More than 1.2 million in Texas alone
Sensitivity of Data: High

Type of Data Compromised: Health Information
Number of Records Exposed: 1529

Type of Data Compromised: Personal information, Social security numbers, Driver's license/state id numbers, Financial account information, Medical information, Health insurance information, Billing and claims information
Sensitivity of Data: High
Personally Identifiable Information: Full NameDate of BirthAddressSocial Security NumberDriver's License/State ID NumberMedical Record NumberDates of ServiceProvider and FacilityDiagnosis or Symptom InformationPrescription/Medication

Type of Data Compromised: Names, Addresses, Procedure information
Sensitivity of Data: High
Personally Identifiable Information: namesaddresses

Type of Data Compromised: Personal information, Medical information, Health insurance information
Sensitivity of Data: High (PII, Medical, Insurance Data)
Handling of PII Incidents: The company handles incidents involving personally identifiable information (PII) through by suspended affected systems.

Regulatory Notifications: Vermont Office of the Attorney General

Source: California Office of the Attorney General
Date Accessed: 2021-04-23

Source: Vermont Office of the Attorney General
Date Accessed: 2022-09-30
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: California Office of the Attorney GeneralDate Accessed: 2021-04-23, and Source: Vermont Office of the Attorney GeneralDate Accessed: 2022-09-30.

Investigation Status: Investigation Ongoing
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through Notified affected individuals and offered credit monitoring and Public Disclosure via Vermont AG Office.

Customer Advisories: Notified affected individuals and offered credit monitoring
Advisories Provided: The company provides the following advisories to stakeholders and customers following an incident: was Notified affected individuals and offered credit monitoring.

Entry Point: Malicious Code on Website

Entry Point: Microsoft Office 365-hosted Business Email Account

Entry Point: Microsoft Office 365 Email Account

Root Causes: Misconfigured software update
Post-Incident Analysis Process: The company's process for conducting post-incident analysis is described as Cybersecurity Firm.
Last Attacking Group: The attacking group in the last incident were an Unauthorized Party, Unauthorized Third Party and Medifies (vendor).
Most Recent Incident Detected: The most recent incident detected was on 2021-04-23.
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2022-09-30.
Most Significant Data Compromised: The most significant data compromised in an incident were Full names, Dates of birth, Addresses, Social Security numbers, Health insurance information, Medical information, Billing information, , Health Information, , Personal Information, Social Security Numbers, Driver's License/State ID Numbers, Financial Account Information, Medical Information, Health Insurance Information, Billing and Claims Information, , names, addresses, procedure information, , Medical Information, Health Insurance Information and .
Most Significant System Affected: The most significant system affected in an incident was phonecomputer and Microsoft Office 365-hosted Business Email Account and Microsoft Office 365 Email Account.
Third-Party Assistance in Most Recent Incident: The third-party assistance involved in the most recent incident was Cybersecurity Firm.
Containment Measures in Most Recent Incident: The containment measures taken in the most recent incident was Suspended affected systems.
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were Social Security numbers, addresses, Full names, Addresses, Billing and Claims Information, names, Driver's License/State ID Numbers, procedure information, Dates of birth, Health insurance information, Health Information, Personal Information, Medical information, Billing information, Social Security Numbers, Health Insurance Information, Financial Account Information and Medical Information.
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 1.2M.
Most Recent Source: The most recent source of information about an incident are California Office of the Attorney General and Vermont Office of the Attorney General.
Current Status of Most Recent Investigation: The current status of the most recent investigation is Investigation Ongoing.
Most Recent Customer Advisory: The most recent customer advisory issued was an Notified affected individuals and offered credit monitoring.
Most Recent Entry Point: The most recent entry point used by an initial access broker were an Microsoft Office 365-hosted Business Email Account, Malicious Code on Website and Microsoft Office 365 Email Account.
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FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. Versions prior to 16.0.96 and 17.0.1 through 17.0.9 have a weak default password. By default, this is a 6 digit numeric value which can be brute forced. (This is the app_password parameter). Depending on local configuration, this password could be the extension, voicemail, user manager, DPMA or EPM phone admin password. This issue is fixed in versions 16.0.96 and 17.0.10.
Neuron is a PHP framework for creating and orchestrating AI Agents. In versions 2.8.11 and below, the MySQLWriteTool executes arbitrary SQL provided by the caller using PDO::prepare() + execute() without semantic restrictions. This is consistent with the name (“write tool”), but in an LLM/agent context it becomes a high-risk capability: prompt injection or indirect prompt manipulation can cause execution of destructive queries such as DROP TABLE, TRUNCATE, DELETE, ALTER, or privilege-related statements (subject to DB permissions). Deployments that expose an agent with MySQLWriteTool enabled to untrusted input and/or run the tool with a DB user that has broad privileges are impacted. This issue is fixed in version 2.8.12.
Neuron is a PHP framework for creating and orchestrating AI Agents. Versions 2.8.11 and below use MySQLSelectTool, which is vulnerable to Read-Only Bypass. MySQLSelectTool is intended to be a read-only SQL tool (e.g., for LLM agent querying, however, validation based on the first keyword (e.g., SELECT) and a forbidden-keyword list does not block file-writing constructs such as INTO OUTFILE / INTO DUMPFILE. As a result, an attacker who can influence the tool input (e.g., via prompt injection through a public agent endpoint) may write arbitrary files to the DB server if the MySQL/MariaDB account has the FILE privilege and server configuration permits writes to a useful location (e.g., a web-accessible directory). This issue is fixed in version 2.8.12.
Okta Java Management SDK facilitates interactions with the Okta management API. In versions 11.0.0 through 20.0.0, race conditions may arise from concurrent requests using the ApiClient class. This could cause a status code or response header from one request’s response to influence another request’s response. This issue is fixed in version 20.0.1.
The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. When using versions 4.11.0 through 4.11.2 and 4.12.0, simultaneous requests on the same client may result in improper lookups in the TokenRequestCache for the request results. This issue is fixed in versions 4.11.2 and 4.12.1.

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