Clinton’s sole briefing occurred on January 22, the day after the Senate confirmed her to the post. On that date, as the nation’s top diplomat, Clinton signed a document acknowledging she received a security briefing.

“I hereby acknowledge that I have received a security indoctrination concerning the nature and protection of SCI,” or the nation’s highest classified materials, was part of the pledge in the document.

But there is no evidence that she received any briefings after that, according to the documents provided to TheDCNF by the State Department. The department’s Foreign Assistance Manual requires all State Department employees to receive regular security training at least once a year.