1. A method executed by at least one processor comprising the steps of: receiving an image associated with a user; analyzing, by the at least one processor, the image; determining, by the at least one processor, a set of colors of the image based on the analysis of the image; generating, by the at least one processor, a representation of the image based on the determined set of colors; comparing, by the at least one processor, the representation of the image to one or more stored representations of a first set of images, the stored representations of the first set of images based on sets of colors of the first set of images; wherein the first set of images are associated with known users; and in response to comparing the representation of the image to the one or more stored representations of the first set of images, determining, by the at least one processor, that the user is a suspected fraudulent user.