Having some stuff on the internet means that other people (or more commonly: the computer programs of other people) copy that content. This might be bad for you if you are worried of the specific copyrights or loose revenue. This might be good if you want to distribute information. However, in both ways you might be interested in who is copying this information from you. Some sites might hotlink or embed your content in their websites (e.g. this might be the case when it comes to images). You can typically detect such things in the logs of your webserver or your web analytics tool. It get‘s more complicated when somebody simply copy & pastes the content from your site. For images, you can use watermarking but for plain text, you have no chance (at least no one that I can imagine), either for a visual or digital signature, since it‘s just ASCII. I‘m looking for a way or tool which crawls the internet for specific keyword combinations, such that i‘m enabled to find people who actually copy textutal content that was originally produced by myself.