Exchange rate bitcoin consistently continue to increased. fact this electrify world because the emergence of a billionaire-billionaire new after successful invest bitcoin.
is investment bitcoin safe?
 there are some to note,others:
Warning  security issues storage :
bitcoin stored in an account called wallet bitcoin (bitcoin wallet). wallet bitcoin can be used to store bitcoin and you can download for free on Google play store or Apple store. counted there are hundreds of companies in the world that makes wallet bitcoin until now, but for the sake of the security of your account, advised to look for the application that has a number of most downloaded and star review of the highest.