Troubling indeed!
http://www.techinsider.io/guccifer-hacked-hillary-clintons-email-2016-5
"He told Fox he looked up the IP address of Blumenthal's emails to Clinton, and then did a simple web scan and found the server.
After that, he supposedly looked for open ports to exploit. He didn't offer any more detail. There are quite a few more technical steps needed to get access to a private server, as opposed to his past hacks of common email services like AOL and Yahoo.
As The New York Times has noted, Guccifer is no computer expert, operating on a cheap laptop and a cellphone and using tools readily available on the web. Many of his "hacks" were the result of social engineering skill and months of guessing security questions until he got in.
"He was not really a hacker but just a smart guy who was very patient and persistent," Viorel Badea, the Romanian prosecutor who directed the case against him, told The Times."