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What is Encryption?
Encryption is a way of scrambling data so that only authorized parties can understand the information. In technical terms, it is the process of converting plaintext to ciphertext.
(Above) German Lorenz cipher machine, used in World War II to encrypt very-high-level general staff messages
Additional Information
https://learn.g2.com/what-is-encryption
https://www.cloudflare.com/learning/ssl/what-is-encryption/
https://searchsecurity.techtarget.com/definition/encryption
https://en.wikipedia.org/wiki/Encryption