End-user awareness training for handling sensitive personally identifiable information would include secure storage and transmission of customer:

Date of birth is designated as sensitive PII by NIST SP 800-122 because, unlike publicly available information, it is a persistent personal identifier that cannot be changed if compromised and is routinely used in combination with name and SSN for identity verification, fraud, and account recovery. Secure storage and encrypted transmission are required to prevent its exploitation.

First and last name alone are generally considered non-sensitive PII because they are publicly available and do not by themselves enable identity theft or fraud without additional identifiers.

A phone number is a lower-sensitivity identifier that is frequently shared publicly and, while it warrants some protection, is not classified at the same sensitivity level as date of birth for identity verification purposes.

Employer name is publicly available information that does not uniquely identify an individual or provide meaningful leverage for fraud or identity theft on its own.