BitFlyer is a good exchange platform where users can perform different operations such as transfer of assets and exchange between cryptocurrency and fiat currency, within its operations it maintains a low commission margin of approximately 2% of the operations that are carried out. With regard to security, it has two-factor authentication and personal security keys to secure the assets of the users, personally I found it an excellent platform because it allows us to buy cryptocurrency safely with fiat currency being in a way safe, which is guaranteed to be able to be purchased safely and it is highly recommended to do so from these platforms.