1. The officials insist no classified information was compromised or stolen during the attack on the unclassified email system.

2. While the hackers have managed to break into the White House email, they only saw unclassified material.

3. Still, access to an unclassified network could still allow attackers to gain access to material that is sensitive.

4. It prohibits any mention of inspection results in any unclassified Defense Department document.

5. Hackers targeted an unclassified White House network in recent weeks but did not damage any systems, according to news reports.

6. The memo is unclassified but labeled for official use only.

7. In exchange, it will make unclassified code produced by the DoD freely available to the open source community.

8. As an example, he disclosed for the first time that earlier this year an unclassified agency network was compromised by Russian hackers.

9. When he took over the State Department in 2001, the agency did not have a computer system for unclassified email.