Here is the documented email report from the FBI files. You will note they found some “Top Secret” information which had been hacked by our enemies. This is on the order of the espionage crime that Julius and Ethel Rosenberg were prosecuted for and convicted of in 1951 and executed for in 1953.
Clinton originally assured Americans that not even one piece of classified material had ever been transmitted via her unsecured, secret, personal server. But now it is known that at least 2,079 emails that she sent or received via that server, contained classified material.5  As the eminent broadcaster and legal scholar Mark Levin has made plain, each of those 2,079 offenses constituted a felonious violation of Section 793 of the Espionage Act.6  And each violation was punishable by a prison sentence of up to ten years.7 
In January 2016, former Secretary of Defense Robert Gates said “the odds are pretty high” that Russia, China, and Iran had compromised Clinton’s unsecured email server.8 
“Oh, what a tangled web we weave, when first we practise to deceive.” — Sir Walter Scott
Hippocrates and His Kin / Hippocrates Modern Colleagues
The Challenges of Yesteryear, Yesterday, Today & Tomorrow