The process of transferring information from your computer to another computer through the Internet. Every time you send e-mail to someone you are uploading it. Usenet A collection of so-called news groups that have nothing to do with news. Usenets are ongoing discussion groups among people on the Internet who share a mutual interest. A virus can wipe out information on your computer and create major havoc.
Viruses usually originate from malicious people.
You can unintentionally download virus from a web site or get it from a disk that someone has lent you. There are virus-checking programs, but there are new viruses popping up every day. So the best defense against a virus is to be very careful not to download programs or data from a site you're not familiar with. An acronym for Wide Area Information System which basically means lots of large databases you can search through. It was designed by WAIS Corp. as a way of accessing very large databases.