at, virus - A hidden program that can hurt your computer, / - dash, _ - underscore, www - world wide web, email - a letter you send through your computer, download - a file transfer from the internet, web-site - a place you can visit using the internet, internet - a worldwide system of computers, cyberspace - the world that only exists inside your computer, SPAM - advertising that comes to your e-mail address, attachment - a document you can send through an email, crash - when the program or the computer stop working,

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