We live in a world where the kind of connections you have can make a big difference in your life. These connections are not just about personal and professional relationships, but also about networks. Computer networks must share connections to enable us access to useful information we need online. While these connections help us create a bustling life online, they have also become a cause for worry and concern, hence the need to understand cyber security.In this book, you will learn about the fundamental concepts of cyber security. These are facts that form the foundation of your knowledge in cyber security. The knowledge you gain from this book will help you understand the need to enhance your security online. From office devices to your personal devices at home, you must be keen on securing your networks all the time.