Much like JPEGs, GIFs, and videos, 3D models & textures must be sent in full to the browser client in order to be rendered. This, in short, makes robust copy-protection essentially impossible for all software that renders 3D on the web. While we at Marmoset do not supply, support, or condone any tools for extracting data from Marmoset Viewer scenes, third party software can be created to accomplish this to varying degrees.
We think 3D content on the web is really cool. It’s our belief that the rewards of displaying high quality 3D content online greatly outweigh the potential risks. For particularly sensitive content, one might opt to share 3D artwork privately; pages like ArtStation offer private, password-protected posts.
The 3D art industry is generally very unkind to thieves and frauds. If you spot stolen artwork online, contact the administrator of the site where it was posted so that it can be removed. Encourage friends and coworkers to take the same action. Theft of this kind is less a case for impenetrable security than a social problem we can all help combat.