One of the only reasonable defenses I know of (assuming that your picture is already stored in the attacker's db) is this https://cvdazzle.com/ https://cvdazzle

One of the only reasonable defenses I know of (assuming that your picture is already stored in the attacker's db) is this https://cvdazzle.com/ https://cvdazzle.com/. Even so, it doesn't scale well, given that you do not have the guarantee to fool more than a given set of algorithms (the technique above targets specifically OpenCV haarcascade face detection algorithm).