Computer Viruses

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A computer virus is a program or piece of code that operates by attaching … A computer virus can seriously damage or completely destroy files or software …

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NCTE Advice Sheet - Computer Virus Advice Sheet 8
Computer Viruses
While viruses have been around almost as long as the PC, they have only recently changed from a minor inconvenience to a serious menace. There are several reasons why they are now much more of a problem . many more computers are in use and there are many more ways of sharing information between them.
– PC Guide
What is a ‘Virus’?
A computer virus is a program or piece of code that operates by attaching itself to some other program or downloaded file. When this program starts, the virus code unintentionally runs, replicates itself and infects other programs or documents on the PC. A computer virus spreads mainly via e-mail attachments, downloadable files from the Internet or floppy disks. Virus infection can be prevented by installing (and maintaining) anti-virus software, among other strategies, some of which are outlined in this advice sheet.
A computer virus can seriously damage or completely destroy files or software on a computer. The result is that files may be lost permanently, educational programs may not function correctly or the overall performance of a computer may be slowed down. The…

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