Protection of Information
This needs to be reiterated today. I know that most of you guys are already conscious of OPSEC, INFOSEC, and the control of classified material. For those of you that aren't, please take a look at the following links.
OPSEC = The premise of OPSEC is that the accumulation of one or more elements of sensitive/unclassified information or data could damage national security by revealing classified information.
INFOSEC = The protection of information and information systems against unauthorized access or modification of information. INFOSEC includes those measures necessary to detect, document, and counter such threats.
CLASSIFIED = Information that has been determined pursuant to this order or any predecessor order to require protection against unauthorized disclosure and is marked to indicate its classified status when in documentary form.
When you're posting information on the internet, if there's any question as to the classification level of the information, don't post it until a subject-matter-expert approves it.
Read the information over at the Hundreds of Fathoms weblog if you want more information on protecting open-source information.