Covered entities and business associates must only provide the required notifications if the breach involved unsecured protected health information. Unsecured protected health information is protected health information that has not been rendered unusable, unreadable, or indecipherable to unauthorized persons through the use of a technology or methodology specified by the Secretary in guidance. 

This guidance was first issued in April 2009 with a request for public comment. The guidance was reissued after consideration of public comment received and specifies encryption and destruction as the technologies and methodologies for rendering protected health information unusable, unreadable, or indecipherable to unauthorized individuals. Additionally, the guidance also applies to unsecured personal health record identifiable health information under the FTC regulations. Covered entities and business associates, as well as entities regulated by the FTC regulations, that secure information as specified by the guidance are relieved from providing notifications following the breach of such information.