MHHS
Company Details
Linkedin ID:
memorialhermann
Website:
Employees number:
18,811
Number of followers:
116,450
NAICS:
62
Industry Type:
Homepage:
http://www.memorialhermann.org/
IP Addresses:
0
Company ID:
MEM_1540044
Scan Status:
In-progress
Memorial Hermann Health System Company CyberSecurity Posture
http://www.memorialhermann.org/
Advancing Health. Personalizing Care. Memorial Hermann Health System is a nonprofit, values-driven, community-owned health system dedicated to improving health. A fully integrated health system with more than 260 care delivery sites throughout the Greater Houston area, Memorial Hermann is committed to delivering safe, high-quality, patient-centered care and offers clinical expertise, innovation and cutting-edge technology to all patients.
Memorial Hermann Health System A.I CyberSecurity Scoring
MHHS Risk Score (AI oriented)Between 750 and 799
MHHS
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MHHS Global Score (TPRM)XXXX
MHHS
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MHHS Company CyberSecurity News & History
Past Incidents
2
Attack Types
1
Memorial Hermann Health System
Breach
Rankiteo Explanation
Attack with significant impact with internal employee data leaks
Description: The U.S. Department of Health and Human Services reported on August 29, 2014, that Memorial Hermann Health System experienced a data breach due to unauthorized access/disclosure on July 7, 2014, affecting approximately 10,604 individuals' protected health information (PHI). The incident involved a workforce member accessing the information inappropriately through a desktop computer, and corrective actions were taken post-incident, including the termination of the workforce member and the expansion of the IT audit program.
Memorial Hermann Health System
Breach
Rankiteo Explanation
Attack threatening the organization's existence
Description: Memorial Hermann Health System notified thousands of its customers of the data breach after one of its contracted vendors, Advent Health Partners, suffered a cyber attack. Unauthorized access and suspicious activities were noticed on an employee's email accounts with data from Memorial Hermann including PHI: first names, last names, dates of birth, social security numbers, financial and medical information. All the impacted customers were notified and given free credit monitoring services.
MHHS 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 MHHS
Incidents vs Hospitals and Health Care Industry Average (This Year)
No incidents recorded for Memorial Hermann Health System in 2025.
Incidents vs All-Companies Average (This Year)
No incidents recorded for Memorial Hermann Health System in 2025.
Incident Types MHHS vs Hospitals and Health Care Industry Avg (This Year)
No incidents recorded for Memorial Hermann Health System in 2025.
Incident History — MHHS (X = Date, Y = Severity)
MHHS cyber incidents detection timeline including parent company and subsidiaries
MHHS Company Subsidiaries
Advancing Health. Personalizing Care. Memorial Hermann Health System is a nonprofit, values-driven, community-owned health system dedicated to improving health. A fully integrated health system with more than 260 care delivery sites throughout the Greater Houston area, Memorial Hermann is committed to delivering safe, high-quality, patient-centered care and offers clinical expertise, innovation and cutting-edge technology to all patients.
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MHHS CyberSecurity News
October 27, 2025 07:00 AM
Memorial Hermann Health System Appoints Guy Giesecke as CEO
Memorial Hermann Health System is proud to announce that Guy B. Giesecke, DHA, is appointed Senior Vice President and Chief Executive...
October 26, 2025 07:00 AM
Healthcare Data Breach Statistics
The HIPAA Journal has compiled healthcare data breach statistics from October 2009, when the Department of Health and Human Services (HHS)...
October 22, 2025 07:00 AM
Weems Memorial Hospital Data Breach Investigation
If you were affected by the George E. Weems Memorial Hospital data breach, you may be entitled to compensation.
September 09, 2025 07:00 AM
Wayne Memorial Hospital Notifies 163,000 Patients About May 2024 Ransomware Attack
Wayne Memorial Hospital patients have recently been notified that some of their protected health information was stolen by a ransomware...
July 17, 2025 07:00 AM
Cyberattack suspected at El Dorado hospital, part of growing trend targeting medical systems
Susan B. Allen Memorial Hospital is investigating a potential cyberattack after patients reported they couldn't reach the facility to...
June 18, 2025 07:00 AM
TMH patient data may have been breached after security issue, former records vendor says
Tallahassee Memorial Hospital has sent out a cybersecurity alert, but they say the breach happened at a data center they don't use anymore.
June 18, 2025 07:00 AM
TMH data breach linked to former vendor, hospital tells patients
A data breach that affected a vendor previously used by Tallahassee Memorial HealthCare may have caused the release of patients' sensitive personal information.
June 17, 2025 10:16 AM
2023 Most Influential in Healthcare Dr. David Callender
Callender has headed Memorial Hermann since 2019. The system, which includes 17 hospitals, this year launched the Memorial Hermann Institute for the...
June 15, 2025 04:46 AM
Anne Neeson: Leading Women 2025
Neeson in fiscal 2024 led the philanthropy arm of the Houston-headquartered system to raise a record $51 million. She directed a campaign to replace...
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
MHHS CyberSecurity History Information
Official Website of Memorial Hermann Health System
The official website of Memorial Hermann Health System is http://www.memorialhermann.org/.
Memorial Hermann Health System’s AI-Generated Cybersecurity Score
According to Rankiteo, Memorial Hermann Health System’s AI-generated cybersecurity score is 754, reflecting their Fair security posture.
How many security badges does Memorial Hermann Health System’ have ?
According to Rankiteo, Memorial Hermann Health System currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does Memorial Hermann Health System have SOC 2 Type 1 certification ?
According to Rankiteo, Memorial Hermann Health System is not certified under SOC 2 Type 1.
Does Memorial Hermann Health System have SOC 2 Type 2 certification ?
According to Rankiteo, Memorial Hermann Health System does not hold a SOC 2 Type 2 certification.
Does Memorial Hermann Health System comply with GDPR ?
According to Rankiteo, Memorial Hermann Health System is not listed as GDPR compliant.
Does Memorial Hermann Health System have PCI DSS certification ?
According to Rankiteo, Memorial Hermann Health System does not currently maintain PCI DSS compliance.
Does Memorial Hermann Health System comply with HIPAA ?
According to Rankiteo, Memorial Hermann Health System is not compliant with HIPAA regulations.
Does Memorial Hermann Health System have ISO 27001 certification ?
According to Rankiteo,Memorial Hermann Health System is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of Memorial Hermann Health System
Memorial Hermann Health System operates primarily in the Hospitals and Health Care industry.
Number of Employees at Memorial Hermann Health System
Memorial Hermann Health System employs approximately 18,811 people worldwide.
Subsidiaries Owned by Memorial Hermann Health System
Memorial Hermann Health System presently has no subsidiaries across any sectors.
Memorial Hermann Health System’s LinkedIn Followers
Memorial Hermann Health System’s official LinkedIn profile has approximately 116,450 followers.
NAICS Classification of Memorial Hermann Health System
Memorial Hermann Health System is classified under the NAICS code 62, which corresponds to Health Care and Social Assistance.
Memorial Hermann Health System’s Presence on Crunchbase
Yes, Memorial Hermann Health System has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/memorial-hermann-foundation.
Memorial Hermann Health System’s Presence on LinkedIn
Yes, Memorial Hermann Health System maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/memorialhermann.
Cybersecurity Incidents Involving Memorial Hermann Health System
As of December 21, 2025, Rankiteo reports that Memorial Hermann Health System has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
Memorial Hermann Health System has an estimated 31,363 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at Memorial Hermann Health System ?
Incident Types: The types of cybersecurity incidents that have occurred include Breach.
How does Memorial Hermann Health System detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an communication strategy with notified all impacted customers and offered free credit monitoring services, and remediation measures with termination of the workforce member, remediation measures with expansion of the it audit program..
Incident Details
Can you provide details on each incident ?
Title: Memorial Hermann Health System Data Breach
Description: Memorial Hermann Health System notified thousands of its customers of the data breach after one of its contracted vendors, Advent Health Partners, suffered a cyber attack. Unauthorized access and suspicious activities were noticed on an employee's email accounts with data from Memorial Hermann including PHI: first names, last names, dates of birth, social security numbers, financial and medical information. All the impacted customers were notified and given free credit monitoring services.
Type: Data Breach
Attack Vector: Email Compromise
Title: Memorial Hermann Health System Data Breach
Description: Unauthorized access/disclosure of protected health information (PHI) affecting approximately 10,604 individuals.
Date Detected: 2014-07-07
Date Publicly Disclosed: 2014-08-29
Type: Data Breach
Attack Vector: Unauthorized Access
Threat Actor: Internal
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 Email Compromise.
Impact of the Incidents
What was the impact of each incident ?
Incident : Data Breach MEM12145522
Data Compromised: First names, Last names, Dates of birth, Social security numbers, Financial information, Medical information
Incident : Data Breach MEM308071625
Data Compromised: Protected health information (phi)
Systems Affected: Desktop Computer
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Phi, Financial Information, and Protected Health Information (PHI).
Which entities were affected by each incident ?
Incident : Data Breach MEM12145522
Entity Name: Memorial Hermann Health System
Entity Type: Healthcare Provider
Industry: Healthcare
Customers Affected: thousands
Incident : Data Breach MEM308071625
Entity Name: Memorial Hermann Health System
Entity Type: Healthcare Provider
Industry: Healthcare
Customers Affected: 10604
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Data Breach MEM12145522
Communication Strategy: Notified all impacted customers and offered free credit monitoring services
Incident : Data Breach MEM308071625
Remediation Measures: Termination of the workforce memberExpansion of the IT audit program
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Breach MEM12145522
Type of Data Compromised: Phi, Financial information
Sensitivity of Data: High
Personally Identifiable Information: first nameslast namesdates of birthsocial security numbers
Incident : Data Breach MEM308071625
Type of Data Compromised: Protected Health Information (PHI)
Number of Records Exposed: 10604
What measures does the company take to prevent data exfiltration ?
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: Termination of the workforce member, Expansion of the IT audit program, .
References
Where can I find more information about each incident ?
Incident : Data Breach MEM308071625
Source: U.S. Department of Health and Human Services
Where can stakeholders find additional resources on cybersecurity best practices ?
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: U.S. Department of Health and Human Services.
Investigation Status
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 Notified all impacted customers and offered free credit monitoring services.
Initial Access Broker
How did the initial access broker gain entry for each incident ?
Incident : Data Breach MEM12145522
Entry Point: Email Compromise
Additional Questions
General Information
Who was the attacking group in the last incident ?
Last Attacking Group: The attacking group in the last incident was an Internal.
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on 2014-07-07.
What was the most recent incident publicly disclosed ?
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2014-08-29.
Impact of the Incidents
What was the most significant data compromised in an incident ?
Most Significant Data Compromised: The most significant data compromised in an incident were first names, last names, dates of birth, social security numbers, financial information, medical information, , Protected Health Information (PHI) and .
What was the most significant system affected in an incident ?
Most Significant System Affected: The most significant system affected in an incident was Desktop Computer.
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 financial information, social security numbers, first names, medical information, Protected Health Information (PHI), last names and dates of birth.
What was the number of records exposed in the most significant breach ?
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 110.0.
References
What is the most recent source of information about an incident ?
Most Recent Source: The most recent source of information about an incident is U.S. Department of Health and Human Services.
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 was an Email Compromise.
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Latest Global CVEs (Not Company-Specific)
Description
Versa SASE Client for Windows versions released between 7.8.7 and 7.9.4 contain a local privilege escalation vulnerability in the audit log export functionality. The client communicates user-controlled file paths to a privileged service, which performs file system operations without impersonating the requesting user. Due to improper privilege handling and a time-of-check time-of-use race condition combined with symbolic link and mount point manipulation, a local authenticated attacker can coerce the service into deleting arbitrary directories with SYSTEM privileges. This can be exploited to delete protected system folders such as C:\\Config.msi and subsequently achieve execution as NT AUTHORITY\\SYSTEM via MSI rollback techniques.
Risk Information
cvss4
Base: 8.5
Severity: LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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The WP JobHunt plugin for WordPress, used by the JobCareer theme, is vulnerable to unauthorized modification of data due to a missing capability check on the 'cs_update_application_status_callback' function in all versions up to, and including, 7.7. This makes it possible for authenticated attackers, with Candidate-level access and above, to inject cross-site scripting into the 'status' parameter of applied jobs for any user.
Risk Information
cvss3
Base: 7.6
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
Description
The WP JobHunt plugin for WordPress, used by the JobCareer theme, is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 7.7 via the 'cs_update_application_status_callback' due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Candidate-level access and above, to send a site-generated email with injected HTML to any user.
Risk Information
cvss3
Base: 4.3
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Description
The FiboSearch – Ajax Search for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `thegem_te_search` shortcode in all versions up to, and including, 1.32.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability requires TheGem theme (premium) to be installed with Header Builder mode enabled, and the FiboSearch "Replace search bars" option enabled for TheGem integration.
Risk Information
cvss3
Base: 5.4
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
References
- https://plugins.trac.wordpress.org/browser/ajax-search-for-woocommerce/tags/1.32.0/partials/themes/thegem-elementor.php#L104
- https://plugins.trac.wordpress.org/browser/ajax-search-for-woocommerce/tags/1.32.0/partials/themes/thegem-elementor.php#L94
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3420841%40ajax-search-for-woocommerce%2Ftrunk&old=3398612%40ajax-search-for-woocommerce%2Ftrunk&sfp_email=&sfph_mail=#file136
- https://wordpress.org/plugins/ajax-search-for-woocommerce
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8149103e-105d-401d-8a15-b07d131baaac?source=cve
Description
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.0 via the ajax_get_members function. This is due to the use of a predictable low-entropy token (5 hex characters derived from md5 of post ID) to identify member directories and insufficient authorization checks on the unauthenticated AJAX endpoint. This makes it possible for unauthenticated attackers to extract sensitive data including usernames, display names, user roles (including administrator accounts), profile URLs, and user IDs by enumerating predictable directory_id values or brute-forcing the small 16^5 token space.
Risk Information
cvss3
Base: 5.3
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/class-functions.php#L41
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/core/class-ajax-common.php#L61
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/core/class-member-directory.php#L205
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/includes/core/class-member-directory.php#L2795
- https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.10.6/templates/members.php#L26
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3421362%40ultimate-member%2Ftrunk&old=3408617%40ultimate-member%2Ftrunk&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/61337d2d-d15a-45f2-b730-fc034eb3cd31?source=cve
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