Data Breach Notifications

Entity Information

  • Type of Organization: Other Commercial
  • Entity Name: Mevion Medical Systems
  • Street Address: 300 Foster Street
  • City: Littleton
  • State, or Country if outside the US: MA
  • Zip Code: 01460

Submitted By

  • Name: Ping Hu
  • Title: General Counsel, VP Legal Compliance
  • Firm name (if different than entity):
  • Telephone Number: 978-540-1477
  • Email Address: pinghu@mevion.com
  • Relationship to entity whose information was compromised: General Counsel

Breach Information

  • Total number of persons affected (including residents): 730
  • Total number of Maine residents affected: 8
  • If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified:
  • Date(s) Breach Occured: 03/28/2021
  • Date Breach Discovered: 04/08/2021
  • 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: 06/17/2021
  • Copy of notice to affected Maine residents: MMS - ME - Notice of Data Event.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: 24 months, Experian, identity monitoring