“Neither,” says Justin White, a former director of information security compliance for the state of Colorado, who has also worked as an information security consultant with Microsoft, Costco, Wells Fargo, and the state of Washington. When asked which service he would use to send sensitive information, White, a graduate of the FBI Citizens Academy, begins to answer one way, then another....
First, while some governmental email systems are highly secure, that’s not true for every department. ...
Still, the State Department probably has very good email security for classified messages — security that Clinton apparently opted out of using.