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Guidehouse

Guidehouse Vendor Cyber Rating & Cyber Score

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Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors. With an integrated business technology approach, Guidehouse drives efficiency and resilience in the healthcare, financial services, energy, infrastructure, and national security markets. Built to help clients across industries outwit complexity, the firm brings together approximately 18,000 professionals to achieve lasting impact and shape a meaningful future.


Guidehouse A.I CyberSecurity Scoring

Incident Details
Guidehouse
Company Information
Website:https://www.guidehouse.com
Employees number:15,351
Number of followers:274,320
NAICS:5416
Industry Type:Business Consulting and Services
Homepage:guidehouse.com
Cyber Premium EstimationGet Supply Chain
Guidehouse Risk Score (AI oriented)
Between 750 and 799
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GuidehouseBusiness Consulting and Services
Updated:
02/04/2026
777/1000
Fair
Baa
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
✖ Insurance prefers TPRM score to calculate premium
Guidehouse Global Score (TPRM)
xxxx
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GuidehouseBusiness Consulting and Services
•••
Score locked
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Findings

Guidehouse
GuidehouseFair
Current Score
777Baa (FAIR)
01000
1 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JUNE 2026
777Before Incident
MAY 2026
777Before Incident
APRIL 2026
777Before Incident
MARCH 2026
777Before Incident
FEBRUARY 2026
777Before Incident
JANUARY 2026
777Before Incident
DECEMBER 2025
780Before Incident
NOVEMBER 2025
780Before Incident
OCTOBER 2025
780Before Incident
SEPTEMBER 2025
780Before Incident
AUGUST 2025
780Before Incident
JULY 2025
780Before Incident
JANUARY 2021
780Before Incident
Cyber Attack
20 Jan 2021 • Guidehouse
Guidehouse

Data Breach at Community Memorial Health System

766After Incident
CRITICAL-14
GUI125072725
The California Office of the Attorney General reported that Guidehouse, on behalf of Community Memorial Health System located in Ventura, CA, experienced a data breach on January 20, 2021. The breach involved a cyber attack that compromised personal information, including names, dates of birth, member IDs, addresses, and certain medical information, although the number of individuals affected is not specified.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
namesdates of birthmember IDsaddressescertain medical information
DATA BREACH
namesdates of birthmember IDsaddressescertain medical informationnamesdates of birthmember IDsaddresses
REFERENCES
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