Hacking is a part of virtual currencies. The more and more securities upgraded, hackers are becoming more upgraded. Bitcoin's blockchain 1.0 version still have some limitations like-limited scalability, slowness, difficulty in sustainable development without hard-fork, and few security weakness. Ethereum and other altcoins are using blockchain 2.0 or more upgrade version of blockchain. Bitcoin's blockchain still remains same but still it is secured so far if users are aware of using.