Data Breach Notifications

Entity Information

  • Type of Organization: Healthcare
  • Entity Name: Group Health Cooperative of South Central WI
  • Street Address: 1265 John Q. Hammons
  • City: Madison
  • State, or Country if outside the US: Wisconsin
  • Zip Code: 53717

Submitted By

  • Name: Crystal Powers
  • Title: Health Information and Privacy Manager
  • Firm name (if different than entity):
  • Telephone Number: 608-662-4899
  • Email Address:
  • Relationship to entity whose information was compromised: Employee

Breach Information

  • Total number of persons affected (including residents): 533,809
  • Total number of Maine residents affected: 107
  • If the number of Maine residents exceeds 1,000, have the consumer reporting agencies been notified:
  • Date(s) Breach Occured: 01/24/2024
  • Date Breach Discovered: 01/25/2024
  • 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: 02/09/2024
  • Copy of notice to affected Maine residents: Breach Notification Letter - Adult FINAL 3-29-24 (1).docx
  • 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: Cyberscout through Identity Force, a TransUnion company, 12 months