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 ?...
The security breaches experienced in those top exchanges is a huge call for concern. Imagine if the blockchain technology is used in a national election voting system and it got hacked, it means the elections will not be credible.