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Encapsulation Definition: Layering or packaging data with protocol headers or methods for secure communication.
Encapsulation in cybersecurity refers to the practice of packaging data along with the methods that operate on that data, or within networking, the process of enclosing data in protocol headers for transmission. It provides structure and modularity, allowing secure, layered communication channels. For instance, protocols like IPSec encapsulate packets with encryption and authentication headers to provide secure tunnels.