a global computer network. It links together millions of computers and smaller computer networks, and allows for information, communication, retail and many other functions

a message sent electronically between computers or devices

connected to a network

a secret series of letters and numbers that is needed to access a computer or program

not meant for the public; personal or secret

a series of letters and numbers that identifies the person using a computer or network and gives them access.

a program designed to harm a computer, destroying data and files

a part of the internet made of documents linked to one another

a message or window that often advertises something and appears over other windows on a computer