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<p>The primary goal of the MITRE compartmented mode workstation (CMW) project was to articulate the security requirements that workstations must meet to process highly classified intelligence data. As a basis for the validity of the requirements developed, a prototype was implemented which demonstrated that workstations could meet the requirements in an operationally useful manner while still remaining binary compatible with off-the-shelf software. The security requirements not only addressed traditional security concerns but also introduced concepts in areas such as labeling and the use of a trusted window management system. The CMW labeling paradigm is based on associating two types of security labels with objects: sensitivity levels and information labels. Sensitivity levels describe the levels at which objects must be protected. Information labels are used to prevent data overclassification and also provide a mechanism for associating with data those markings that are required for accurate data labeling, but which play no role in access control decisions. The use of a trusted window manager allows users to easily operate at multiple sensitivity levels and provides a convenient mechanism for communicating security information to users in a relatively unobtrusive manner.</p>
data overclassification prevention; MITRE compartmented mode workstation; security requirements; highly classified intelligence data; binary compatible; trusted window management system; security labels; objects; sensitivity levels; information labels; markings; accurate data labeling; multiple sensitivity levels; security of data; software engineering; workstations.

J. Picciotto, J. Berger, P. Cummings and J. Woodward, "Compartmented Mode Workstation: Prototype Highlights," in IEEE Transactions on Software Engineering, vol. 16, no. , pp. 608-618, 1990.
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