The subject of research in ethics are moral convictions and their justifications. Ethics is a theoretical reflection of morality and theories of moral behavior. As a philosophical discipline reflects not only the conduct that is related to the differentiation of right and wrong, good and evil, but also examines individual and social moral convictions, in connection with that discernment arise. Engineering Ethics, as part of the sphere of applied ethics, criticaly reflects the grounds of moral conduct, assessment and examines the background of moral values and moral convictions, the legitimacy of their reasoning, and evidence-based arguments. Engineering Ethics develops criteria which systematize normative beliefs and offers orientation in decision-making situations in which engineers and technicians are insufficient everyday moral intuitions. Engineering Ethics therefore be primarily interested in the justification of moral conviction in cases deciding the daily engineering practice, in which our intuitive moral convictions are uncertain, or contradictory and ambiguous.