A process of detecting an implemented blacklist may include downloading data from at least one blacklist. The process may also include compiling a list of image elements from the at least one blacklist based on a feature of the image elements, and selecting an image element from the list of image elements. The process may further include receiving a report indicative of the selected image successfully loading while a webpage is loaded on a web browser of a client device, and analyzing the report based on an expected response of the web browser to detect the implemented blacklist of the at least on blacklist.