Data Breach Notifications

Entity Information

  • Type of Organization: Healthcare
  • Entity Name: City of Hope
  • Street Address: 1500 East Duarte Road
  • City: Duarte
  • State, or Country if outside the US: California
  • Zip Code: 91010-3012

Submitted By

  • Name: James Kitchen
  • Title: Partner
  • Firm name (if different than entity): Jones Day
  • Telephone Number: (412) 394-7272
  • Email Address:
  • Relationship to entity whose information was compromised: Outside Counsel

Breach Information

  • Total number of persons affected (including residents): 827149
  • Total number of Maine residents affected: 166
  • If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified: Yes
  • Date(s) Breach Occured: 07/07/2023 - 10/15/2023
  • Date Breach Discovered: 03/25/2024
  • 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: 12/14/2023; 04/02/2024
  • Copy of notice to affected Maine residents: ME Notice Attachment Letter.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: Identity theft monitoring is being provided to potentially impacted individuals at no cost for two years through Kroll. This identity theft monitoring includes credit monitoring, fraud consultation, and identity theft restoration.