The vagueness of norm related to the regulation concerning harmful activities and threatening security and public order by foreign national residing in Indonesian territory has resulted in the emergence of multiple interpretations related to prohibited actions carried out by them, hence they are not subject to immigration administrative actions. This study aimed to determine the indicators of activities that endanger public security and order by foreign national residing in Indonesian territory. This was normative legal research using statutory approach with document study techniques and interpretation techniques. The study indicated that the indicators of activities that endanger public security and order by foreign national residing in Indonesian territory are proven to have carried out activities that were contrary to immigration, both administrative or criminal, proven to have carried out activities that met the elements of general crimes and specific crimes in the territory of Indonesia, proven to have committed violations that were contrary to norms, ethics, and custom in society that could be troubling as well as causing chaos in society.