This article is from the Viruses and the Mac FAQ, by David Harley D.Harley@icrf.icnet.uk with numerous contributions by others.
The reference site for this FAQ is now www.icsa.net. However, my own
site at <http://www.sherpasoft.org.uk/MacSupporters/> will be the
first place new versions will be posted.
It's also available from Henri Delger's Prodigy Anti-Virus Center
file library, as is the alt.comp.virus FAQ. It will probably be available
shortly from <www.eicar.dk>
There are HTML versions at:
I have no control over the content of these sites, and can't guarantee
that they're up-to-date.