Software piracy has been a serious problem for decades and continues to cost software industry some billions of dollars each year. In this study we examine the Normative and Informational Social Influences that affect an individual’s decision to buy or use pirated software. Based upon previous research about ethical decision making in software adoption, and consumer susceptibility to social influence, we develop a research model designed to test the moderating effects of social influence on the ethical decision making process. An online survey is conducted to collect data. Our research extends the knowledge about software piracy and provides valuable and important insights for researchers, practitioners and policy/strategy makers in government.