Trafficking in human beings is an illegal act which interferes with the order foreseen by international regulations and national laws and endangers the values vital to society. However, all forms of human trafficking are not of the same danger to society and therefore do not represent the same risk, threat or danger to the safety of the state, society or individuals. In this paper, the author tends to classify the existing forms and aspects of trafficking in human beings as a manifestation in security practice in accordance with the level of social endangerment, geographical level of implementation, bio-physical characteristics of the victims, relation of the victim toward the position in which he/she finds himself/herself and the form of exploitation of the victim, including a short description of their most significant characteristics.