System Integrity

The quality that a system has when it performs its intended function in an unimpaired manner, free from unauthorized manipulation of the system, whether intentional or accidental.

That condition of a system wherein its mandated operational and technical parameters are within the prescribed limits. 2. [The] Attribute of an information system (IS) when it performs its intended function in an unimpaired manner, free from deliberate or inadvertent unauthorized manipulation of the system. [INFOSEC-99]