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FIGURE 1.4 Levels of government/military classification
Top Secret Top secret is the highest level of classification. The
unauthorized disclosure of top-secret data will have drastic effects and
cause grave damage to national security. Top-secret data is
compartmentalized on a need-to-know basis such that a user could
have top-secret clearance and have access to no data until the user has
a need to know.
Secret Secret is used for data of a restricted nature. The unauthorized
disclosure of data classified as secret will have significant effects and
cause critical damage to national security.
Confidential Confidential is used for data of a sensitive, proprietary,
or highly valuable nature. The unauthorized disclosure of data
classified as confidential will have noticeable effects and cause serious
damage to national security. This classification is used for all data
between secret and sensitive but unclassified classifications.
Sensitive But Unclassified Sensitive but unclassified (SBU) is used
for data that is for internal use or for office use only (FOUO). Often
