Looks like my patience served to smoke out your retort to any reply I could make to your hypothetical question. I saw where you were going. My reply now is that carelessness itself, in my limited experience, goes unpunished among underlings unless it results in a leak or breach, or unless someone higher in the chain of command wants the "careless" person to be cashiered for some other reason.  This would be the case in Clinton vs her enemies in Congress. In this case, Congress (meaning Chuck Grassley) had to go through Comey, who refused to be a tool of partisan pressure, at least to that degree. In that scenario, Comey played his hand well, denying the assassins access to any legal justification for censure or worse.

"What ifs" are fine for mind games, but in this circumstance, Hillary Clinton, doing as her predecessors did, likewise suffered no security breach. No harm, no blame.  Have a good evening.