In-browser virus scanning for uploads
I'm building a multimedia portal application for my organisation to allow individuals to upload photos and videos to our servers.
We have an anti-virus product on our back end servers which will protect our network if any virusses are uploaded. I have been asked however to investigate the possibility of adding an additional layer of security to have the upload content scanned for virusses in the user's browser prior to the file being uploaded to us.
I'm aware that there are online virus scanning tools available (such as virscan.org) which requires that the file is uploaded to a 3rd party server for scanning. This is not ideal due to bandwidth requirements etc.