Company Details
glg
11,918
442,669
519
glginsights.com
0
GLG_4578248
In-progress

GLG Company CyberSecurity Posture
glginsights.comGLG is the world’s largest insight network. We connect decision makers to the right experts so they can act with the confidence that comes from true clarity and have what it takes to get ahead. Our network of experts is the world’s largest source of first-hand expertise, and we recruit hundreds of new experts every day. We bring the power of insight to every great professional decision. Visit GLGinsights.com. For information regarding GLG’s practices with respect to personal information, please visit our privacy policy at https://glginsights.com/privacy-policy/
Company Details
glg
11,918
442,669
519
glginsights.com
0
GLG_4578248
In-progress
Between 700 and 749

GLG Global Score (TPRM)XXXX

Description: The Washington State Office of the Attorney General reported on March 12, 2024, that Gerson Lehrman Group experienced a ransomware attack on November 12, 2023, affecting 3,734 individuals. The compromised information included names, financial and banking information, full dates of birth, and passport numbers.


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

GLG is the world’s largest insight network. We connect decision makers to the right experts so they can act with the confidence that comes from true clarity and have what it takes to get ahead. Our network of experts is the world’s largest source of first-hand expertise, and we recruit hundreds of new experts every day. We bring the power of insight to every great professional decision. Visit GLGinsights.com. For information regarding GLG’s practices with respect to personal information, please visit our privacy policy at https://glginsights.com/privacy-policy/


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Wolters Kluwer (EURONEXT: WKL) is a global leader in professional information, software solutions, and services for the healthcare, tax and accounting, financial and corporate compliance, legal and regulatory, and corporate performance and ESG sectors. We help our customers make critical decisions e

Be Part of Progress - together we bring greater understanding to the world Springer Nature is one of the leading publishers of research in the world. We publish the largest number of journals and books and are a pioneer in open research. Through our leading brands, trusted for more than 180 years,

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We deliver actionable, objective business and technology insights. Our expert guidance and tools enable faster, smarter decisions and stronger performance on an organization’s mission-critical priorities. Our unrivaled combination of business and technology insights steers clients toward the right

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On March 12, 2024, Gerson Lehrman Group, Inc. (GLG) filed a notice of data breach with the Attorney General of Maine after discovering that an unauthorized...
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Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of GLG is https://glginsights.com.
According to Rankiteo, GLG’s AI-generated cybersecurity score is 728, reflecting their Moderate security posture.
According to Rankiteo, GLG currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, GLG is not certified under SOC 2 Type 1.
According to Rankiteo, GLG does not hold a SOC 2 Type 2 certification.
According to Rankiteo, GLG is not listed as GDPR compliant.
According to Rankiteo, GLG does not currently maintain PCI DSS compliance.
According to Rankiteo, GLG is not compliant with HIPAA regulations.
According to Rankiteo,GLG is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
GLG operates primarily in the Information Services industry.
GLG employs approximately 11,918 people worldwide.
GLG presently has no subsidiaries across any sectors.
GLG’s official LinkedIn profile has approximately 442,669 followers.
GLG is classified under the NAICS code 519, which corresponds to Other Information Services.
Yes, GLG has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/gerson-lehrman-group.
Yes, GLG maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/glg.
As of December 16, 2025, Rankiteo reports that GLG has experienced 1 cybersecurity incidents.
GLG has an estimated 2,362 peer or competitor companies worldwide.
Incident Types: The types of cybersecurity incidents that have occurred include Ransomware.
Title: Gerson Lehrman Group Ransomware Attack
Description: Gerson Lehrman Group experienced a ransomware attack affecting 3,734 individuals, compromising names, financial and banking information, full dates of birth, and passport numbers.
Date Detected: 2023-11-12
Date Publicly Disclosed: 2024-03-12
Type: Ransomware
Common Attack Types: The most common types of attacks the company has faced is Ransomware.

Data Compromised: Names, Financial and banking information, Full dates of birth, Passport numbers
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Names, Financial And Banking Information, Full Dates Of Birth, Passport Numbers and .

Entity Name: Gerson Lehrman Group
Entity Type: Company
Customers Affected: 3734

Type of Data Compromised: Names, Financial and banking information, Full dates of birth, Passport numbers
Number of Records Exposed: 3734

Source: Washington State Office of the Attorney General
Date Accessed: 2024-03-12
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: Washington State Office of the Attorney GeneralDate Accessed: 2024-03-12.
Most Recent Incident Detected: The most recent incident detected was on 2023-11-12.
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2024-03-12.
Most Significant Data Compromised: The most significant data compromised in an incident were names, financial and banking information, full dates of birth, passport numbers and .
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were names, financial and banking information, full dates of birth and passport numbers.
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 377.0.
Most Recent Source: The most recent source of information about an incident is Washington State Office of the Attorney General.
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NXLog Agent before 6.11 can load a file specified by the OPENSSL_CONF environment variable.
uriparser through 0.9.9 allows unbounded recursion and stack consumption, as demonstrated by ParseMustBeSegmentNzNc with large input containing many commas.
A vulnerability was detected in Mayan EDMS up to 4.10.1. The affected element is an unknown function of the file /authentication/. The manipulation results in cross site scripting. The attack may be performed from remote. The exploit is now public and may be used. Upgrading to version 4.10.2 is sufficient to fix this issue. You should upgrade the affected component. The vendor confirms that this is "[f]ixed in version 4.10.2". Furthermore, that "[b]ackports for older versions in process and will be out as soon as their respective CI pipelines complete."
MJML through 4.18.0 allows mj-include directory traversal to test file existence and (in the type="css" case) read files. NOTE: this issue exists because of an incomplete fix for CVE-2020-12827.
A half-blind Server Side Request Forgery (SSRF) vulnerability exists in kube-controller-manager when using the in-tree Portworx StorageClass. This vulnerability allows authorized users to leak arbitrary information from unprotected endpoints in the control plane’s host network (including link-local or loopback services).

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