Final answer:
The security rule is primarily concerned with the protection of electronic personal health information data, which is vital for individual safety and security.
Step-by-step explanation:
The security rule deals specifically with protecting electronic personal health information data. This is crucial because people need their personal, financial, and medical information to remain private for their safety and security. The rule helps ensure that organizations take the necessary precautions to safeguard this sensitive data. For instance, the Personal Data Notification & Protection Act of 2017 defines a security breach in terms of unauthorized acquisition or access to sensitive personally identifiable information. When such breaches occur, they can lead to serious consequences like identity theft. This has been demonstrated by large-scale data breaches at organizations like Target and JP Morgan, highlighting the significance of securing such electronic information.