Data Breach Notifications

Entity Information

  • Type of Organization: Other Commercial
  • Entity Name: Greylock McKinnon Associates, Inc.
  • Street Address: 75 Park Plaza, 4th Floor
  • City: Boston
  • State, or Country if outside the US: MA
  • Zip Code: 02116

Submitted By

  • Name: Linn Freedman
  • Title: Partner
  • Firm name (if different than entity): Robinson & Cole LLP
  • Telephone Number: 4017093353
  • Email Address:
  • Relationship to entity whose information was compromised: Outside Legal Counsel

Breach Information

  • Total number of persons affected (including residents): 341650
  • Total number of Maine residents affected: 2067
  • If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified: Yes
  • Date(s) Breach Occured: 05/30/2023
  • Date Breach Discovered: 02/07/2024
  • 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: 04/05/2024
  • Copy of notice to affected Maine residents: GMA Individual DOJ Notice English 4.5.pdf
  • Date of any previous (within 12 months) breach notifications: February 23, 2023 (this is a supplement to the notice filed in February); please also note that a SSN was only included in the Medicare Health Insurance Claim Numbers that were affected; SSN by itself was not affected
  • 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: 24 months; Cyberscout, identity theft protection and credit monitoring