This document outlines an introduction to cyber security and ethical hacking. It covers various types of cybercrimes like phishing, hacking, and cyber stalking. It also defines related cyber security terminology. The document discusses cyber security perspectives and trends in Tanzania, Africa, and globally. It proposes ways to overcome cybercrimes such as strengthening security policies and encouraging international collaboration. The latter part describes practical hacking sessions on topics like exploring phishing sites and hacking social media accounts.