Company Details
guidehouse-us
14,743
216,660
5416
guidehouse.com
0
GUI_2128170
In-progress

Guidehouse Company CyberSecurity Posture
guidehouse.comGuidehouse is a global consultancy providing advisory, technology, and managed services to the commercial and public sectors. Guidehouse is purpose-built to serve the national security, financial services, healthcare, energy, and infrastructure industries. Disrupting legacy consulting delivery models with its agility, capabilities, and scale, the firm delivers technology-enabled and focused solutions that position clients for innovation, resilience, and growth. With high-quality standards and a relentless pursuit of client success, Guidehouse’s more than 18,000 employees collaborate with leaders to outwit complexity and achieve transformational changes that meaningfully shape the future.
Company Details
guidehouse-us
14,743
216,660
5416
guidehouse.com
0
GUI_2128170
In-progress
Between 750 and 799

Guidehouse Global Score (TPRM)XXXX

Description: 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.


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

Guidehouse is a global consultancy providing advisory, technology, and managed services to the commercial and public sectors. Guidehouse is purpose-built to serve the national security, financial services, healthcare, energy, and infrastructure industries. Disrupting legacy consulting delivery models with its agility, capabilities, and scale, the firm delivers technology-enabled and focused solutions that position clients for innovation, resilience, and growth. With high-quality standards and a relentless pursuit of client success, Guidehouse’s more than 18,000 employees collaborate with leaders to outwit complexity and achieve transformational changes that meaningfully shape the future.


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Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of Guidehouse is https://www.guidehouse.com.
According to Rankiteo, Guidehouse’s AI-generated cybersecurity score is 778, reflecting their Fair security posture.
According to Rankiteo, Guidehouse currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, Guidehouse is not certified under SOC 2 Type 1.
According to Rankiteo, Guidehouse does not hold a SOC 2 Type 2 certification.
According to Rankiteo, Guidehouse is not listed as GDPR compliant.
According to Rankiteo, Guidehouse does not currently maintain PCI DSS compliance.
According to Rankiteo, Guidehouse is not compliant with HIPAA regulations.
According to Rankiteo,Guidehouse is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Guidehouse operates primarily in the Business Consulting and Services industry.
Guidehouse employs approximately 14,743 people worldwide.
Guidehouse presently has no subsidiaries across any sectors.
Guidehouse’s official LinkedIn profile has approximately 216,660 followers.
Guidehouse is classified under the NAICS code 5416, which corresponds to Management, Scientific, and Technical Consulting Services.
No, Guidehouse does not have a profile on Crunchbase.
Yes, Guidehouse maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/guidehouse-us.
As of December 16, 2025, Rankiteo reports that Guidehouse has experienced 1 cybersecurity incidents.
Guidehouse has an estimated 18,467 peer or competitor companies worldwide.
Incident Types: The types of cybersecurity incidents that have occurred include Cyber Attack.
Title: Data Breach at Community Memorial Health System
Description: 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.
Date Detected: 2021-01-20
Type: Data Breach
Common Attack Types: The most common types of attacks the company has faced is Cyber Attack.

Data Compromised: Names, Dates of birth, Member ids, Addresses, Certain medical information
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Names, Dates Of Birth, Member Ids, Addresses, Certain Medical Information and .

Entity Name: Community Memorial Health System
Entity Type: Healthcare
Industry: Healthcare
Location: Ventura, CA

Type of Data Compromised: Names, Dates of birth, Member ids, Addresses, Certain medical information
Personally Identifiable Information: namesdates of birthmember IDsaddresses

Source: California Office of the Attorney General
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: California Office of the Attorney General.
Most Recent Incident Detected: The most recent incident detected was on 2021-01-20.
Most Significant Data Compromised: The most significant data compromised in an incident were names, dates of birth, member IDs, addresses, certain medical information and .
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were dates of birth, member IDs, addresses, certain medical information and names.
Most Recent Source: The most recent source of information about an incident is California Office of the Attorney General.
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