Is there any way to force antivirus to scan USB once plugged, either in Symantec or Mcafee.
As far as I am aware you cannot do this currently with VSE. You can configure it to scan a drive once you open it in Explorer, but this is not ideal especially if there is an autorun app on there.
They do seem to offer another product which does it, not sure how this fits it.
I would suggest talking to McAfee.