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E
E-commerce
E-commerce is simply buying things over the Internet.

Emoticon
Acronym for ‘emotion icon’ showing the mood of the writer of an e-mail. An example of this is :-) - a smiley face saying that the e-mail message shouldn’t be taken too seriously.

Encryption
Encryption uses mathematical formula to scramble data for security purposes. The encrypted data is then stored in keys. These keys are kept by both the sending and receiving parties. The data can be decoded using the key. The data cannot be unscrambled without the correct key. Encryption is used in e-commerce (see above).