The charge would be from the following. Intent is not required while negligence is specified.
18 U.S. Code § 793 - Gathering, transmitting or losing defense information
"(f) Whoever, being entrusted with or having lawful possession or control of any document, writing, code book, signal book, sketch, photograph, photographic negative, blueprint, plan, map, model, instrument, appliance, note, or information, relating to the national defense,
(1) through gross negligence permits the same to be removed from its proper place of custody or delivered to anyone in violation of his trust, or to be lost, stolen, abstracted, or destroyed, or (2) having knowledge that the same has been illegally removed from its proper place of custody or delivered to anyone in violation of its trust, or lost, or stolen, abstracted, or destroyed, and fails to make prompt report of such loss, theft, abstraction, or destruction to his superior officer—Shall be fined under this title or imprisoned not more than ten years, or both."

Originally Posted by
sonatine
ITT: Angry white nerds who dont understand what classification is, how it works, or what it's for.
She is a lawyer that should have a very good understanding of what her responsibilities and liabilities were when she signed the following form.
Classified Information Nondisclosure Agreement(Standard Form 312)
2.
I hereby acknowledge that I have received a security indoctrination concerning the nature and protection of classified information, including the procedures to be followed in ascertaining whether other persons to whom I contemplate disclosing this information have been approved for access to it, and that I understand these procedures.
3. I have been advised that the unauthorized disclosure, unauthorized retention, or negligent handling of classified information by me could cause damage or irreparable injury to the United States or could be used to advantage by a foreign nation. I hereby agree that I will never divulge classified information to anyone unless: (a)
I have officially verified that the recipient has been properly authorized by the United States Government to receive it; or (b) I have been given prior written notice of authorization from the United States Government Department or Agency (hereinafter Department or Agency) responsible for the classification of information or last granting me a security clearance that such disclosure is permitted.
I understand that if I am uncertain about the classification status of information, I am required to confirm from an authorized official that the information is unclassified before I may disclose it, except to a person as provided in (a) or (b), above. I further understand that I am obligated to comply with laws and regulations that prohibit the unauthorized disclosure of classified information.
4.
I have been advised that any breach of this Agreement may result in the termination of any security clearances I hold; termination of my employment or other relationships with the Departments or Agencies that granted my security clearance or clearances. In addition, I have been advised that any unauthorized disclosure of States Code; *the provisions of section 783(b}, title 50, United States Code; and the provisions of the Intelligence Identities Protection Act of 1982. I recognize that nothing in this Agreement constitutes a waiver by the United States of the right to prosecute me for any statutory violation.
7. I understand that all classified information to which I have access or may obtain access by signing this Agreement is now and will remain the property of, or under the control of the United States Government unless and until otherwise determined by an authorized official or final ruling of a court of law.
I agree that I shall return all classified materials which have, or may come into my possession or for which I am responsible because of such access: (a) upon demand by an authorized representative of the United States Government; (b) upon the conclusion of my employment or other relationship with the Department or Agency that last granted me a security clearance or that provided me access to classified information; or (c) upon the conclusion of my employment or other relationship that requires access to classified information. If I do not return such materials upon request, I understand that this may be a violation of sections 793 and/or 1924, title 18, United States Code, a United States criminal law
You can compare the above to the following quotes from the press conference today. Some may also wish to compare the findings to some of the claims made by her defending her actions. 1: Her emails were not classified. 2: She returned all work-related emails. 3: Classified emails were not “marked” classified 4: Her lawyers read through all of her emails. 5:She took the security of her email system seriously.
FBI Director quotes:
“I have so far used the singular term, "e-mail server," in describing the referral that began our investigation. It turns out to have been more complicated than that. S
ecretary Clinton used several different servers and administrators of those servers during her four years at the State Department, and used numerous mobile devices to view and send e-mail on that personal domain.
As new servers and equipment were employed, older servers were taken out of service, stored, and decommissioned in various ways.”....
“From the group of 30,000 e-mails returned to the State Department,
110 e-mails in 52 e-mail chains have been determined by the owning agency to contain classified information at the time they were sent or received. Eight of those chains contained information that was Top Secret at the time they were sent; 36 chains contained Secret information at the time; and eight contained Confidential information, which is the lowest level of classification. Separate from those, about 2,000 additional e-mails were "up-classified" to make them Confidential; the information in those had not been classified at the time the e-mails were sent.
The FBI also discovered several thousand work-related e-mails that were not in the group of 30,000 that were returned by Secretary Clinton to State in 2014.” .... “With respect to the thousands of e-mails we found that were not among those produced to State, agencies have concluded that three of those were classified at the time they were sent or received, one at the Secret level and two at the Confidential level.” ....
“I should add here that we found no evidence that any of the additional work-related e-mails were intentionally deleted in an effort to conceal them. Our assessment is that, like many e-mail users, Secretary Clinton periodically deleted e-mails or e-mails were purged from the system when devices were changed. Because she was not using a government account—or even a commercial account like Gmail—
there was no archiving at all of her e-mails” ...
“It could also be that some of the additional work-related e-mails we recovered were among those deleted as "personal" by Secretary Clinton's lawyers when they reviewed and sorted her e-mails for production in 2014.
The lawyers doing the sorting for Secretary Clinton in 2014 did not individually read the content of all of her e-mails, as we did for those available to us; instead, they relied on header information and used search terms to try to find all work-related e-mails among the reportedly more than 60,000 total e-mails remaining on Secretary Clinton's personal system in 2014.” ...
“It is also likely that there are other work-related e-mails that they did not produce to State and that we did not find elsewhere, and that are now gone because they deleted all e-mails they did not return to State, and the lawyers cleaned their devices in such a way as to preclude complete forensic recovery.
We have conducted interviews and done technical examination to attempt to understand how that sorting was done by her attorneys. Although
we do not have complete visibility because we are not able to fully reconstruct the electronic record of that sorting, we believe our investigation has been sufficient to give us reasonable confidence there was no intentional misconduct in connection with that sorting effort” ....
“
there is evidence that they were extremely careless in their handling of very sensitive, highly classified information.
For example, seven e-mail chains concern matters that were classified at the Top Secret/Special Access Program level when they were sent and received. These chains involved Secretary Clinton both sending e-mails about those matters and receiving e-mails from others about the same matters. There is evidence to support a conclusion that any reasonable person in Secretary Clinton's position, or in the position of those government employees with whom she was corresponding about these matters, should have known that an unclassified system was no place for that conversation. In addition to this highly sensitive information, we also found information that was properly classified as Secret by the U.S. Intelligence Community at the time it was discussed on e-mail (that is, excluding the later "up-classified" e-mails).
None of these e-mails should have been on any kind of unclassified system, but their presence is especially concerning because all of these e-mails were housed on unclassified personal servers not even supported by full-time security staff, like those found at Departments and Agencies of the U.S. Government—or even with a commercial service like Gmail.
Separately, it is important to say something about the marking of classified information. Only a very small number of the e-mails containing classified information bore markings indicating the presence of classified information. But even if information is not marked "classified" in an e-mail, participants who know or should know that the subject matter is classified are still obligated to protect it.” ....
“With respect to potential computer intrusion by hostile actors, we did not find direct evidence that Secretary Clinton's personal e-mail domain, in its various configurations since 2009, was successfully hacked. But, given the nature of the system and of the actors potentially involved, we assess that we would be unlikely to see such direct evidence. We do assess that hostile actors gained access to the private commercial e-mail accounts of people with whom Secretary Clinton was in regular contact from her personal account.”