My little brother recently got to trading and a tragedy happened to him. He started trading in a platform called poloniex. He actually was making good money in the exchange. One day he decided to try margin trading. On his first try he lost 5400$ because a correction happened due to a cyber security attack in the form of a ransom ware asking for 300$ or the data will be lost. This is a crazy world we live in! Be carefull guys!