The rapid increase of bitcoin can cause an imbalance of supply and demand. At the same time, as the product of the algorithm, completely exchanged on the internet, bitcoin is the bait of cybercriminals. This currency is easy to "evaporate" when there are any trading fluctuations. This currency is also used in the underworld, where governments can not keep track of money laundering, prohibited purchases, and crime. And the biggest risk is that many central banks deny the value of the currency. Bitcoin will continue to grow, attracting investors because the profits that this virtual currency bring is very attractive. However, this is also the most risky currency.