The Criminal Justice Services Board, through DCJS, is obligated to secure the public safety and welfare against incompetent, unqualified, unscrupulous, or unfit persons engaging in the activities of private security services. An individual with a criminal history involving a conviction of a felony or certain misdemeanors may be denied licensure, registration or certification. Any person convicted of a misdemeanor involving moral turpitude (lying, stealing, cheating); assault and battery; damage to real or personal property; controlled substances (drugs) or imitation controlled substances; prohibited sexual behavior; or firearms offenses or any felony may have their application denied.  Bail Bondsmen, Bail Enforcement Agents, and SCOP should see their specific FAQ's relating to this question.