Board Thread:Support Requests - Getting Technical/@comment-25571719-20141114085243/@comment-5558012-20141114162707

Not if you do not own the copyright to the images (your images must be originals - no screenshots, etc, or retain within the condition of use for no reuse). This however can't prevent someone in all cases from reusing it. If the image is marked under an attribution or a public licensing they can use them whether you like it or not. You can check out the Worth One Thousand: Image Use Best Practices and the Understanding Attribution on Wikia blogs for some extra info.