Security Safeguards
Transmission Security
HIPAA safeguard protecting ePHI as it moves across networks.
Transmission Security is a HIPAA Security Rule technical safeguard requiring measures that guard ePHI against unauthorized access while it is transmitted over an electronic network.
It is primarily satisfied through encryption in transit (such as TLS) and integrity checks that ensure data isn't altered en route. This is why HIPAA-compliant platforms enforce encrypted connections for any transfer of patient data. How a host implements it is in HIPAA hosting security measures.