This document discusses cyber ethics and its evolution. It defines cyber ethics as the study of the impact of computer technology on ethics and the design of policies for its ethical use. The evolution of cyber ethics is summarized in four phases from the 1950s to the present. Key issues in each phase included the impact of computers, privacy, intellectual property, computer crime, free speech and more. The document argues cyber ethics is a unique field because computer technology is logically malleable and can be designed with unintentional power, creating new policy vacuums.