1. A computer-implemented method comprising: identifying, by a computer, a suspect, wherein the suspect is a mobile object or an individual located in a target zone around a target; determining, by the computer, that the suspect has moved a first distance in the target zone during a first time period; determining, by the computer, a suspect-target distance, wherein the suspect-target distance is the shortest distance between the suspect and the target; determining, by the computer, a suspect-potential destination distance, wherein the suspect-potential destination distance is the shortest distance between the suspect and a potential destination in the target zone for the suspect; determining, by the computer, that the suspect has moved a second distance in the target zone during a second time period; determining, by the computer, a suspect zone around the suspect, wherein the suspect zone comprises a suspect zone entry point indicating the point at which the suspect entered the suspect zone; determining, by the computer, a movement characteristic index associated with the suspect zone when the suspect has moved the second distance, wherein the movement characteristic index is a function of the actual trajectory traveled by the suspect from the suspect zone entry point to the current location of the suspect and the distance between the current location of the suspect and the suspect zone entry point; and determining, by the computer, a probability of hostility of the suspect, wherein the probability of hostility is obtained from the movement characteristic index and a ratio of the suspect-target distance and the suspect-potential destination distance.