In the Information Systems discipline, increasing attention is being paid to the issue of professional ethics. In this article, a personal perspective on the topic is offered. The academic philosophies of ethical theory are introduced, followed by detailed treatment of four fundamental issues: codes of ethics, intellectual property rights, professional accountability and data protection. The intention of the article is to arouse the interest of IS professionals and to stimulate debate. Through a discussion, future developments in the professionalism of information systems are explored, and questions are raised concerning the way in which information systems is regulated, and the role it may play in the future.