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Classified Systems

Classified Systems. Classified Systems. Early 1980s: DoD is concerned about the confidentiality of classified information on computers with multiple users (time sharing systems) Mid 80s to mid 90s: The Orange Book (or TCSEC): standard reference for computer security for DoD

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Classified Systems

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  1. Classified Systems CSE465-591 Fall 2006

  2. Classified Systems • Early 1980s: DoD is concerned about the confidentiality of classified information on computers with multiple users (time sharing systems) • Mid 80s to mid 90s: • The Orange Book (or TCSEC): standard reference for computer security for DoD • The Red Book: covering Trusted Network Interpretation (TNI) of the Orange Book • The whole “rainbow series” • http://www.iwar.org.uk/comsec/resources/standards/rainbow/rainbow.html CSE465-591 Fall 2006

  3. DoD Classification Scheme • Data classification based on need for confidentiality • Levels based on potential damage if compromised, and defines treatment rules • Top secret • Secret • Confidential • Unclassified • Unclassified includes • Sensitive But Unclassified (SBU); e. g., medical, salary, performance review data • For Official Use Only (FOUO). Not subject to release under the Freedom of Information Act (FOIA). May include company proprietary information. CSE465-591 Fall 2006

  4. Classified Information Management • Accountability for classified data • Declassification/Downgrade • Sanitization/Purging • Destruction CSE465-591 Fall 2006

  5. References • M. Merkow, J. Breithaupt, Information Security: Principles and Practices, Prentice Hall, August 2005, ISBN 0131547291 • Matt Bishop, Introduction to Computer Security, Addison-Wesley, 2004, ISBN: 0321247442 • Matt Bishop, Computer Security: Art and Science, Addison- Wesley, 2002, ISBN: 0201440997 CSE465-591 Fall 2006

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