Media disposition

Security, Continued Disk security markings To avoid confusion, set aside groups of disks for recording classified data at each security level. Mark each disk or diskette with a stick-on label with the overall security classification and a permanently assigned identification number. When you declassify and degauss the disks, remove all external labels indicating the classification unless you immediately use the disk to store information of the same classification level. Display screen security markings When you use the computer to create classified graphics and text, make sure to mark the computer monitor at the top above the screen with the appropriate security classification. Hard copy security markings Mark hard copy reports or printouts from a printer, terminal, plotter, or other computer equipment at the top-and-bottom-center of each page with the appropriate classification or the word unclassified. Number each page consecutively. In most cases, do so as you compose the artwork or text in the computer. If you are in doubt about security markings, consult OPNAVINST 5510.1. Media disposition Magnetic media, such as disks, eventually wear out or become damaged. If the disk contained classified material, degauss or erase it before destruction. Handle and dispose of printer ribbon and carbon paper used to print/transfer classified information according to the highest classification level of the data printed by that ribbon or carbon. Follow the requirements outlined in the OPNAVINST 5510.1. Equipment inventory In addition to safeguarding the information in a computer, protect the custody of the system. Do not indiscriminately move the system in and out of work spaces. If you must loan equipment, limit equipment loans and have borrowers sign for custody of the loaned gear. Keep an inventory identifying the equipment by make and model, the type of system the equipment is part of, the mode the equipment operates in, what kind of information and media the computer processes, and the level of sensitivity for the highest classification of material processed. Post the name and phone number of the physical security officer and/or ADPSO near the workstation. 3-42