Most recent information security incidents have been caused by employees’ poor managements rather than technology defects. Accordingly, organizations try to improve their information security by demanding that employees conform to information security policies. Previous studies examined the effect of organization’s enforcement-based systems, using penalties and rewards, on employees’ comply with information security policies. It found there is a lack of autonomy and sustainability if conformity depended on external environmental factors. To confirm, following social influence theory, that employees’ information security practices can be better performed if they go beyond compliance and are internalized, we developed an instrument that measures employees’ attitudes on information security policies and conducted a pilot test. The results show that information security practices are performed better by the higher internalization group than by the compliance group, proving the greater effectiveness of internalization in improving both employees’ and organizations’ information security.