Many worms now make use of openly shared folders under Windows to propagate. If you share a folder and enable writing to it, the worm will take advantage and copy itself to this folder. It does not matter what the name of the folder is.
A good idea is to password protect the folder, so someone writing to it has to input the password.
For more information on this topic, visit these other SearchSecurity.com resources:
Virus Prevention Tip: Top virus threats, part two: Nimda
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This was first published in August 2002