bittrex is the best exchange, my rating is 4.0 because no system is always safe, i hope bittrex always upgrading our system. y ecause we never know when hackers attack the system. I just hope Bittrex is always safe for all users. ecause we never know when hackers attack the system. I just hope Bittrex is always safe for all users.bittrex is the best exchange, my rating is 4.0 because no system is always safe, i hope bittrex always upgrading our system. because we never know when hackers attackSee full review