Here's Strozk's latest on classified documents, in which he also talks about the Hillary Clinton case:
What the hell
Look, mishandling of classified information is serious business. I spent the better part of my career investigating it. Mishandling classified information - as opposed to, say, espionage, in which a person deliberate provides national defense information to a foreign power - is frequently unintentional. But even inadvertent mishandling has the potential to put sources, methods, and technologies at risk (things like human sources operating in hostile countries, sensitive collection sensors on a satellite, or a cutting-edge military technology).
The thing is, unfortunately, mishandling of classified information goes on all the time. All the time. On a daily basis somewhere in the federal government, someone accidentally inserts classified information into an unclassified email, or takes home a stack of paper which has some classified in the middle of the pile, or misplaces a briefcase with classified information in it on the metro or at a conference. You get the idea. When I was the head of the FBI's Counterespionage Section, on a monthly basis, if not more, we'd get calls from various agencies telling us they'd come across a scenario like I just described, asking us if we would open a case. The subsequent discussion inevitably centered around one critical question: what did they know about the intent of the person who had mishandled the classified information?
Did the person intentionally and willfully mishandle it, e.g., had they repeatedly had mishandling violations, were they warned, counseled, and/or punished for them and nevertheless continued to do so?
Was there a massive amount of it (I'm not talking about tens of documents - I mean tens of thousands or more, Chelsea Manning or allegedly Edward Snowden amounts of material)?
Did it involve a party, like a foreign power or the media, that would indicate some sort of disloyalty to the US? (I'm not going to dive into a discussion about whether or not leaking classified information to the media can ever be proper. My view? There are appropriate avenues for whistleblowing. If you nevertheless feel a need to leak, great, but be prepared to pay for that self-decided altruism with jail time if a jury of your peers decides it's merited.)
Did the person try to impede the investigation - did they lie, destroy evidence, etc?