Data Breach Notifications

Entity Information

  • Type of Organization: Other Commercial
  • Entity Name: Gerson Lehrman Group, Inc.
  • Street Address: 60 E 42nd St, 3rd floor
  • City: New York
  • State, or Country if outside the US: New York
  • Zip Code: 10165

Submitted By

  • Name: Tony Onorato
  • Title: Partner
  • Firm name (if different than entity): Pierson Ferdinand LLP
  • Telephone Number: 2024593599
  • Email Address:
  • Relationship to entity whose information was compromised: Legal counsel

Breach Information

  • Total number of persons affected (including residents): 152,621
  • Total number of Maine residents affected: 338
  • If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified: Yes
  • Date(s) Breach Occured: 11/12/2023
  • Date Breach Discovered: 02/05/2024
  • Description of the Breach:
    • External system breach (hacking)
  • Information Acquired - Name or other personal identifier in combination with: Social Security Number

Notification and Protection Services

  • Type of Notification: Written
  • Date(s) of consumer notification: 03/12/2024
  • Copy of notice to affected Maine residents: Data Subject Notice Letter - 2024-03-12.pdf
  • Date of any previous (within 12 months) breach notifications:
  • Were identity theft protection services offered: Yes
  • If yes, please provide the duration, the provider of the service and a brief description of the service: CyEx Identity Defense Total provides 12-month 3-bureau credit monitoring, related alerts, and identity theft insurance.