Ethical Hacking is a kind of hacking, but its not be used for commercial. Usually ethical Hacking is used to share knowledge of hacking, or just test the security of a network. After the ethical hackers test it, they will tell the administrator of a network that they could break into their network (reported the bugs), they suggested the admin to repair it rapidly. So, in the ethical hacking, there is no defacing, and carding. Its just hack for fun, dude.