How often should I scan my computer for viruses?

Anti-virus software works by comparing individual files with a list of known viruses. The list is usually updated at least every day by connecting to an online database which monitors the latest threats.

You should scan all your files at least weekly as part of your housekeeping routine.

Most software checks every file you download from the net before you open it and very email attachment before allowing it into your inbox. It can also run a check on every file you open whenever you open it, to make sure it is using the latest list of known threats.

You may also set anti-virus software to check on every file on the computer every time you start up. Although this guarantees safety it is not vital and can slow down your computer.


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