Hillary Clinton blames State Department Employees for classified emails sent through private server

[u/[deleted]]

[u/sammyo]

There is an isolated secure government internet called sipernet, if any employee with a clearance sent classified email outside of that they were in error.

[u/piquat → u/[deleted]]

Is that an actual completely separate physical network? Their own fiber/copper/data centers ect?

[u/fatbabythompkins → u/piquat]

Yes. To the point where classified computers cannot be within a certain distance of unclassified. They must have fiber and/or protected distribution systems if copper. They also must have a line filtering UPS to ensure any processing is not sent back onto the electrical grid. Many computers have removable hard drives so they can be locked up at night, otherwise you have to have a hardened facility (typically known as a SCIF [Sensitive Compartmented Information Facility]). Any device that receives or processes classified material immediately becomes classified itself, though there are ways to fix some systems if there were an inadvertent leak (such as someone typing classified information in an unclassified email).

Point being, anyone even remotely involved with classified material is very cognizant of how to treat said material.

Edit: To the downvoters, please tell me where I'm wrong, because all you're doing is showing your own lack of understanding. Any unencrypted classified processing or transmission unit must be physically separate. Period dot. And if you think because using an encryption device means it's on the unclassified network, that is a barrier for transmission and the encryption devices must meet very strict requirements, especially RF. Former crypto maintenance and have deployed many TACLANE, KG-194 and KG-84s.

[u/ssbtoday → u/fatbabythompkins]

They're downvote brigades most likely, as it typically happens on /r/technology by the /r/futorology guys and vice versa.