Integrity level

(1) A range of values of an item necessary to maintain system risks within acceptable limits. For items that perform IArelated mitigating functions, the property is the reliability with which the item must perform the mitigating function. For IAcritical items whose failure can lead to threat instantiation, the property is the limit on the frequency of that failure. (2) A range of values of a property of an item necessary to maintain risk exposure at or below its acceptability threshold.