In my opinion, Cryptocurrency will not be able to say 100% has sufficient security or can be said that it will never be able to be hacked. Because Cryptocurrency is digital technology, and everything is online and related to the Internet. And that is an easy thing for famous hackers. Never mind our account, only a country's secret documents can be hacked by criminals. In essence, if we have been involved in the Cryptocurrency World we must be prepared with all the risks we will receive, but we must remain extra careful in everything.