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Mass General Brigham

Mass General Brigham Vendor Cyber Rating & Cyber Score

massgeneralbrigham.org
in
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ISO 27001
SOC 2 Type 1
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Mass General Brigham is an integrated academic health care system, uniting great minds to solve the hardest problems in medicine for our communities and the world. Mass General Brigham connects a full continuum of care across a system of academic medical centers, community and specialty hospitals, a health insurance plan, physician networks, community health centers, home care, and long-term care services. Mass General Brigham is a nonprofit organization that is committed to patient care, research, teaching, and service to the community. In addition, Mass General Brigham is one of the nation’s leading biomedical research organizations and a principal teaching affiliate of Harvard Medical School.


MGB A.I CyberSecurity Scoring

Incident Details
MGB
Company Information
Website:https://www.massgeneralbrigham.org/
Employees number:18,417
Number of followers:174,782
NAICS:62
Industry Type:Hospitals and Health Care
Homepage:massgeneralbrigham.org
Cyber Premium EstimationGet Supply Chain
MGB Risk Score (AI oriented)
Between 700 and 749
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MGBHospitals and Health Care
Updated:
03/09/2026
743/1000
Moderate
Ba
AaaAaABaaBaBCaaCaC
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MGB Global Score (TPRM)
xxxx
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MGBHospitals and Health Care
•••
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Vulnerabilities
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Findings

MGB
MGBModerate
Current Score
743Ba (MODERATE)
01000
2 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
SEPTEMBER 2026
743Before Incident
AUGUST 2026
739Before Incident
JULY 2026
738Before Incident
JUNE 2026
737Before Incident
MAY 2026
737Before Incident
APRIL 2026
736Before Incident
MARCH 2026
735Before Incident
FEBRUARY 2026
734Before Incident
JANUARY 2026
734Before Incident
DECEMBER 2025
733Before Incident
NOVEMBER 2025
732Before Incident
OCTOBER 2025
731Before Incident
AUGUST 2023
749Before Incident
Breach
31 Jul 2023 • MGB
Mass General Brigham Health Plan

Data Breach at Mass General Brigham Health Plan

698After Incident
CRITICAL-51
MAS548072825
The Vermont Office of the Attorney General reported on June 28, 2024, a data breach incident involving Mass General Brigham Health Plan (MGBHP) that may have allowed unauthorized access to members' personal information between July 31, 2023, and April 2, 2024. The exposed information potentially included names, addresses, medical record numbers, dates of birth, email addresses, phone numbers, health insurance policy numbers, and Social Security numbers.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
namesaddressesmedical record numbersdates of birthemail addressesphone numbershealth insurance policy numbersSocial Security numbers
DATA BREACH
namesaddressesmedical record numbersdates of birthemail addressesphone numbershealth insurance policy numbersSocial Security numbersSensitivity Of Data: High
REFERENCES
Blog URLSource URL
NOVEMBER 2020
785Before Incident
Breach
23 Nov 2020 • MGB
Mass General Brigham Incorporated

Data Breach at Mass General Brigham Incorporated

724After Incident
HIGH-61
MAS844072325
The New Hampshire Attorney General's Office reported a data breach involving Mass General Brigham Incorporated on December 18, 2020. The breach was due to human error where a file containing personal information, including names and Social Security numbers, was posted on a public website for a 14-hour period between November 23-24, 2020, affecting approximately 179 New Hampshire residents.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
NamesSocial Security numbers
DATA BREACH
NamesSocial Security numbersSensitivity Of Data: High
REFERENCES
Blog URLSource URL

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