The author analyses selected issues regarding reasoning in the area of typical aspects of security. From the methodological perspective, there reasonings are unspecific with regard to other types of moral reasonings. Two normal logics apply: deontic and modal, while the terms ‘must’ and ‘should’ is determined fully by the logical properties of these terms. In the axiological context, the values indicated by human rights constitute the point of reference, which also contributes to the unification of moral standards in the activities of various security agencies in the civilised world.