Dictionary of Information Security

specifically related to information systems. See also

disaster recovery plan and business continuity plan.

control zone the space, expressed in feet of radius, sur-

rounding equipment processing sensitive informa-

tion, that is under sufficient (primarily) physical and

(possibly) technical control to preclude an unautho-

rized entry or compromise

controlled access see access control

controlled sharing the condition that exists when access

control is applied to all users and components of a

system

controls an important, but strangely ill-defined, area of

security, very similar to safeguards and countermeasures,

used to prevent failures of integrity, availability, and

confidentiality. Controls are grouped and discussed in

a number of not quite orthogonal ...