They have access to documnets via a specific application on their desktop, which our client does not want us to allow them to be able to send outside in any way. For the same reason, USB and DVD write access are disabled.

If they had internet access they could send anything outside via any sort of website...

Now since the content we're talking about is *public domain* legal records, I don't really understand (and personally, strongly disagree with) the website blocking also, but if that's what they want, that's what we'll have to do...