GERSON LEHRMAN GROUP, INC.

Gerson Lehrman Group, Inc. reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-03-13. 6,760 Massachusetts residents were affected.

Gerson Lehrman Group, Inc. reported a data breach to the Oregon Attorney General. The breach was reported on 2024-03-12. The breach occurred during 11/12/2023 - 11/13/2023. The breach was discovered on 2/5/2024. Notice was sent on 3/12/2024.

Gerson Lehrman Group, Inc. reported an external system breach that occurred on November 12, 2023, and was discovered on February 5, 2024. The breach affected 152,621 individuals, compromising their names and Social Security numbers. Gerson Lehrman Group began notifying the impacted individuals on March 12, 2024, and offered 12 months of identity monitoring services.

Gerson Lehrman Group (GLG) disclosed a ransomware incident where an unauthorized third party accessed data from GLG's computer systems. The incident impacted personal information including names. GLG activated its incident response plan, engaged cybersecurity firms, and offered complimentary credit monitoring services to affected individuals.

On November 12, 2023, Gerson Lehrman Group (GLG) experienced a ransomware incident in which an unauthorized third party accessed data from GLG's computer systems. Affected personal information may include name and other personal elements. GLG activated its incident response plan, engaged cybersecurity firms, and is offering complimentary CyEx Identity Defense Total credit monitoring to affected individuals.

Gerson Lehrman Group (GLG) disclosed a ransomware incident in a Montana consumer notification letter. An unauthorized third party accessed GLG's computer systems, potentially impacting names. GLG activated its incident response plan, engaged cybersecurity firms, and offered complimentary credit monitoring via CyEx Identity Defense Total. No evidence of misuse was found at the time of the letter.

Gerson Lehrman Group, Inc reported a data breach to the Indiana Attorney General. The breach occurred on 2023-11-12 and was reported on 2024-03-12. 1,833 Indiana residents were affected.

Gerson Lehrman Group (GLG) experienced a ransomware incident on November 12, 2023, where an unauthorized third party accessed data from GLG's computer system. The incident potentially affected personal information including names and other elements. GLG activated its incident response plan, engaged cybersecurity firms, and is offering credit monitoring services to affected individuals. No evidence of misuse has been found.

Gerson Lehrman Group, Inc. experienced a ransomware incident on November 12, 2023, where an unauthorized third party accessed data from its computer system. The incident potentially impacted personal information of 710 New Hampshire residents, including names and other personally identifiable information. GLG activated its incident response plan, engaged cybersecurity firms, and reported the incident to federal law enforcement. Notification letters were mailed on March 12, 2024, offering complimentary identity theft and credit monitoring services.

Gerson Lehrman Group, Inc. reported a ransomware incident on November 12, 2023, affecting approximately 3,734 Washington residents. The attack involved unauthorized access via valid credentials and data encryption. GLG engaged forensic investigators, hardened systems, and provided credit monitoring services to affected individuals.

GERSON LEHRMAN GROUP, INC filed a data-breach notice with the Illinois Attorney General in March 2024 (case 24-03-047). The register records the breach as discovered on March 1, 2024. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.