Remember the times when a pop-up appeared on your screen with a message to immediately transfer a large amount of bitcoins to retrieve your files? Ransomware is still a serious threat to many people and organisations, and nowadays more and more advanced techniques are used to target you and your company to steal your data. This talk is about what Ransomware actually is, who writes the code and gains from it. To get a better understanding of what we are dealing with, you get a bit of the Ransomware history and you will learn what types of Ransomware are out there, including the different stages