Today, the problem of piracy is a major concern for governments, academia and software industry as it has become a prevailing phenomenon. While much effort has been devoted to identify the factors that cause software piracy, most studies focus primarily on if social sanctioning mechanisms can be effective in deterring piracy. In this thesis, the research focus differs in that it emphasizes the role of self-sanction to safeguard copyright. Based on Bandura¡¦s Social Cognitive Theory, the determinants of effective self-sanction against piracy are presupposed to be enactive mastering and vicarious observation. We therefore hypothesize that well being resulted from previous software creativity experience as well as moral obligation should positively correlate with creative self-efficacy and ethical self-efficacy concerning software piracy. The results show that creative experience indeed significantly predicts both creative and ethical self-efficacy, and four constructs (i.e., creative experience, creative self-efficacy, moral obligation, and subjectively perceived critical mass) have significantly positive influence on ethical self-efficacy. Moreover, the results show that, within creative experience, the ¡§relationship development¡¨ dimension has significantly positive influence on ethical self-efficacy concerning software piracy, while the ¡§self-acceptance¡¨ dimension exerts significantly negative influence.