You come to work, only to discover that your data is compressed into this strange format that prevents you from opening files. Later, you discover there is a email address with instructions that tell you to send bitcoins that you have to purchase to unlock your computer. You've been infected by a worm. What now? Do you pay or do you start all over? How do you stop this from ever happening? What are alternative things that you can do? This book explores these and other options. The benefits of providing you with this information is to make you aware of the real dangers out there. Maybe, there is something that you can do right now to stop this madness. In this book we explore ransomware.