According To expect they always say blockchain can never be hacked and your information can never be stolen .. But day in day out Hacker are hacking crypto exchanges to steal people asset , ETH Suspended hard Fork because of security reason . HitBTC and Cryptopia are understand maintenance because of hacker . Are they Using block-chain technology to deceive Us ?...
What a shame... You need to read not only a headers of articles. This exchanges are centralized pieces of shit. As for Ethereum it wasn't a bug, it is additional take care about smart contract programmers who will write code with the one old principle what can make this contract vulnerable