In certain US Government organizations, information can be broadly grouped into the categories: unclassified, for official use only $($FOUO$),$ confidential, secret, and top secret $($TS$).$ However, being granted a TS clearance does not automatically mean an individual can readily access any information they want to$.$ Many top$-$secret projects require that in addition to having a TS clearance, a person must also be $$read$-$on$$ to the project and sign an NDA.

These steps help enforce the principle of:

Group of answer choices

Complete mediation

Least astonishment

Least common mechanism

Least privilege