Therefore, a felony

Fox News: "Sources: Review affirms Clinton server emails were 'top secret,' despite department challenge"

An intelligence community review has re-affirmed that two classified emails were indeed “top secret” when they hit Hillary Clinton’s unsecured personal server despite a challenge to that designation by the State Department, according to two sources familiar with the review.

I like the "confused old lady" position the Hillary campaign takes whenever this issue comes up: "How was I supposed to know that an update on the position of North Korean missiles was classified?"