Which of the following is an acceptable method of protecting sensitive CJI data during transmission?

Transmitting via encrypted emails is considered an acceptable method of protecting sensitive Criminal Justice Information (CJI) data during transmission because encryption enhances the security of the data being sent. This process ensures that even if the data is intercepted during transmission, it remains unreadable to unauthorized individuals. Encryption converts the information into a coded format that can only be deciphered by someone who has the appropriate decryption key, thus maintaining confidentiality and integrity of the sensitive information.

This approach aligns with best practices for safeguarding sensitive information, particularly in domains dealing with criminal justice data, where maintaining privacy and security is paramount. Other methods presented are not secure; they either expose data to potential interception or do not employ any protective measures that would prevent unauthorized access.