Group Health Cooperative of South Central Wisconsin

Group Health Cooperative of South Central Wisconsin (a Health Plan, WI) reported to HHS on 2024-04-08 a ransomware attack affecting 533,809 individuals. PHI on network servers was compromised, including names, Social Security numbers, addresses, dates of birth, and medical record numbers. The CE notified HHS, affected individuals, and the media, provided substitute notice and complimentary credit monitoring, and implemented additional administrative, technical, and security safeguards. Staff were retrained on PHI protection.

Group Health Cooperative of South Central WI reported a data breach affecting 533,809 individuals. The breach, described as an external system hack, occurred on January 24, 2024, and was discovered the following day. Compromised information included names and Social Security numbers. The organization began notifying affected individuals on February 9, 2024, and offered 12 months of identity theft protection services.

Group Health Cooperative of South Central Wisconsin (GHC-SCW) reported a data breach to the Wisconsin DATCP. The public was notified on 2024-02-09. The incident occurred on On or before January 25, 2024. Data accessed: Names, Social Security numbers, addresses, telephone numbers, e-mail addresses, dates of birth and/or death, member numbers, and Medicare and/or Medicaid numbers. 533,809 individuals were affected.