This book is intended for people who have no prior knowledge of penetration testing, ethical hacking and would like to enter the field. It is a practical step by step guide to penetration testing that teaches the techniques and tools the real hackers use to hack networks and exploit vulnerabilities. The guide is based in Kali Linux and other tools . This guide assumes that readers have no knowledge Kali Linux and teaches you through penetration testing exercises. This guide covers the all the phases of penetrations testing starting from reconnaissance, scanning, gaining access, maintaining assess and covering tracks. The main feature of the guide will be 73 Pen-tests exercises that cover wireless and Wi-Fi penetration testing, client side penetration testing, server side penetration testing, creating and delivering malware, social engineering, email spoofing, complete web penetration testing and Mobile phones penetration testing. I hope you find this guide helpful and insightful as you learn more about penetration testing.