protecting Box.com shared links

Hi:

How can we avoid members share the box.com links?.

For instance, I have a membership site and each member has access to its own page where the download links are placed. Only the members have access, but when they click a link, they are redirected to the box.com site in order to download the file.

All member could copy the shared link and distribute it to friends or other sites.

Can I avoid this process ?

I don´t want to applied a password or expired link because I want the members have access to their downloads whenever.

thanks for the answers………………….