About File Sharing

File sharing allows other users to "share" or download files over the Internet or other, smaller networks. With peer-to-peer software, one of the most common applications for file-sharing, files are stored on and served from an individual's personal computer.

Microsoft Windows also allows folders on a computer to be shared over the network. The permissions for these "open shares" normally allow anyone with access to the folders to modify the files within them, presenting a security risk for the machine.

Many risks associated with file-sharing include:

• Malware or spyware that comes bundled with file-sharing software or shared files may become installed on your machine.
• Downloaded files may contain pirated or copyrighted material. This could lead to possible legal action against the user.
• By opening shares, any personal information on your computer may become accessible to others.
• Sharing files opens your machine to attacks. Vulnerable peer-to-peer software becomes accessible through the open shares. This could lead to your machine attacking other machines on the same network.

To eliminate these risks, avoid using peer-to-peer software and disable file sharing in Microsoft Windows. If you do need to have open shares, protect both your machine and the campus network by doing the following:

• Set up password protection for all shared file systems.
• Configure shares on local system drives to allow access to specific individuals or groups.
• If possible, only allow Read access to a share.
• Scan all files before transferring them to your system.
• Only transfer files from a well known source.
• Do not share material that is copyright protected.