Trading cryptocurrencies has shown itself to be quite a lucrative business, at the same time the exchanges where trading occurs underscores how risky trading might be; exchanges can lack basics controls on know your customer (KYC), fraud prevention and more; there have also been a number of significant thefts or hacks where millions were lost; while the risk is real it has now slowed the market's growth as total value of all digital currencies has soared to over $140bn. Source.
