TinEye reverse image search is fairly useful in this scenario. Go to https://tineye.com/ https://tineye.com/ , upload an image (or paste in a URL), and it'll sh

TinEye reverse image search is fairly useful in this scenario. Go to https://tineye.com/ https://tineye.com/ , upload an image (or paste in a URL), and it'll show you other copies of that image all over the internet. This doesn't always help you get to the bottom of things, but it is a next step to take.