What term defines how a system protects communication channels from risks such as infiltration, exploitation, and interception?

The term that best defines how a system protects communication channels from risks such as infiltration, exploitation, and interception is "Transmission control." This concept encompasses various techniques and protocols used to ensure secure data transmission over networks. Transmission control involves mechanisms like encryption, secure tunneling, and the implementation of secure communication protocols (such as TLS/SSL), which help safeguard the integrity and confidentiality of data in transit. By focusing on maintaining the security of communication channels, transmission control aims to prevent unauthorized access and ensures that data remains secure from potential threats during the transfer process.

In contrast, terms like supply chain, vendor viability, and vendor policy primarily focus on aspects related to the relationships and trustworthiness of suppliers or vendors rather than directly addressing the protection of data communication channels.