What must a service member do when they send emails containing PII?

When sending emails that contain Personally Identifiable Information (PII), the appropriate action is to digitally sign and encrypt the emails. This practice ensures the confidentiality and integrity of the sensitive information being transmitted.

Digitally signing emails helps in verifying the sender's identity, ensuring the recipient that the message has not been altered in transit. Encryption protects the content of the email from unauthorized access, meaning that even if the email were intercepted, the information would remain secure and unreadable to anyone without the appropriate decryption key.

This practice is crucial in protecting sensitive information from potential breaches, safeguarding both the service member's responsibility and the privacy of individuals whose PII is being communicated. The other approaches, such as sending without encryption or sharing PII with multiple recipients without secure methods, would expose the data to unnecessary risks and should be avoided.