What are the application security flaws in UX design?

Do you remember the movie “Rise of the Planet of Apes?” Actually, you do not have to because this is about the “rise of the planet of apps” and not apes as in the movie. Did you mumble something about that being a terrible pun? I get it, I am not so good at puns, and we are not here to talk about puns. We are going to try and put on a serious face like that of Sandor Clegane (the hound) in Game of Thrones and focus on UX design cyber application security.