In 2014-2017, I used to be a concept artist, and there were a lot of art theft. They'd trace my art and publish it as 'theirs', I didn't know it until my humble supporters told me and helped call them out. Some of the art thieves apologized and credited me, and there were some who still got away with it. I'm uncertain now, but the best way is to either watermark your contents and have a strong foundation of followers so that they can help call the thieves out. Hope for the best for you Tom!!