In this book, you Will learn about the fundamental concepts Of cybersecurity. These are facts that form the foundation of your knowledge in cybersecurity. The knowledge you gain from this book will help you understand the need toenhance your security online. We use real-life examples to show you how bad a security breach can be.Companies have suffered millions of dollars in damages in the past. Some of these examples are so recent that they may still be fresh in your mind. They help you reexamine your interactions online and question whether you shouldprovide the information that a given website requests. These simple decisions can prevent a lot of damage in the long run. In cybersecurity today, the policy is Of the utmost importance. You must understand the policies that guide your interaction with different individuals and entities, especially concerning data security and sharing. Some attacks are multilayered, such that the way you respond to them might create a bigger problem Or prevent one. By the end Of this book. it is Our hope that you will be more vigilant and protective of your devices and networks and be more aware of your networking environment.