Based on the known actions of Hillary Clinton, some federal investigators have cited potential violations of at least six-(6) laws in addition to the aforementioned Section 793 of the U.S. Espionage Act:
Refuting Clinton Lies: Fast Facts about Hillary Clinton's Email
The law: Every government employee who is granted a security clearance to handle classified documents and information is required to sign form SF-312, which is a straight-forward and strictly enforced non-disclosure agreement. As clearly stated on this form, “classified information is marked or unmarked classified information, including oral communications, that is classified under the standards of Executive Order 13526.”
Hillary Clinton’s defense: Clinton stated that she never knowingly sent or received any documents with classified markings or designations. Her defense is irrelevant as the document she signed clearly states that the signatory clearly understands that documents could be classified without bearing such markings.