Encryption is the process of converting data into "unreadable code" so that prying eyes cannot understand the content. Encryption is necessary as valuable & sensitive information is often sent from one computer to another via a network that technically can be accessed by anybody. It provides a degree of security should the information fall into the wrong hands.
ENCRYPTION
Meaning of ENCRYPTION in English
English glossary of Internet and PC terminology. Английский глоссарий Интернет и ПК терминологии. 2012