Why You Need a Physical Vault to Secure a Virtual Currency0.01

    In conventional finance, transactions such as bank wires can be undone for a period after they take place. Cryptocurrency security has to be more sophisticated because there is no undo function, according to Nicholas Weaver, a security researcher at the University of California at Berkeley. “Because cryptocurrency is incompatible with modern financial fraud mitigation, you just can’t keep it on an internet connected computer,” he says.