Guidehouse Reports Breach Affecting Multiple Healthcare Provider Clients
Ventura, CA-based Community Memorial Health System and Ithaca, NY-based Cayuga Medical Center, and Allentown, PA-based Lehigh Valley Health Network have been affected by a cyberattack at a vendor used by one a business associate.
The three healthcare providers used Guidehouse for medical billing and collection services. On January 20, 2021, hackers gained access to the Accellion File Transfer Appliance (FTA) used by Guidehouse for transferring files to clients. For patients of Community Memorial Health System the files included sensitive patient information such as names, dates of birth, member ID addresses, and certain medical information. For Cayuga Medical Center patients, names, dates of birth, insurance account numbers, and certain medical information were potentially compromised. For Lehigh Valley Health Network, the potentially compromised data include names, medical record numbers, account numbers, dates of service, diagnosis and procedure names, billing or payer information and provider names.
Guidehouse was notified...