Implementing encryption for data transmitted over public networks serves as a compensating control when intrinsic, direct security assurances for data transmission are impractical.
Using encryption for data in transit effectively acts as a compensating control when inherent security cannot be assured through direct methods—for instance, when secure physical connections are infeasible. Encryption compensates for the insecure nature of public networks by ensuring confidentiality and integrity of the data as it moves across these networks. Although not mentioned by name, a common example of this in practice is a Virtual Private Network (VPN), which establishes an encrypted connection for data transmission, compensating for the public network's lack of built-in secure communication channels.
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What is encryption, and why is it important for data transmission?
What is a Virtual Private Network (VPN), and how does it work?
What are intrinsic and direct security assurances in data transmission?