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 ?...
Who says blockchain cannot be hacked? Of course it can ba hacked that's why cryptocurrencies and exchanges keeps on improving their securities so that malware's will not be able to catch-up to their updates.