Abstract
Computer Ethics covers various themes such as hacker, computer crime, professional ethics, system invasion, responsibility, security, privacy, intellectual property right, encryption and etc. The purpose of this paper is to show the hypothesis that can understand the relations of these themes. First, I would like to offer four categories of invisibility/visibility and professional/user that support us to analyze computer ethics from a bird’s-eye view of point. Second, various themes of computer ethics will be plotted into four categories. Finally, I will discuss the relations of the themes and the contents of them.
