The document discusses the concepts of ethics and ethical hacking. It defines ethics as having a moral responsibility to do the right thing. Ethical hacking is described as the art and science of determining vulnerabilities in an information system in order to better defend it, and is performed by skilled security professionals. The document outlines different types of ethical hacking tests including white box testing where the network is fully known and black box testing where it is not. It also discusses original hacker ethics from 1984 focusing on hands-on learning and free information sharing, and new hacker ethics emphasizing doing no harm and protecting privacy. Advantages of ethical hacking include prevention of attacks while disadvantages involve potential misuse of gained knowledge or data exposure.