K
KISS - Keep It Simple Stupid (principle, or idea, that a design, or process, should be kept as simple as possible, avoiding unnecessary steps)
KMS - Key Management Service (system or service that manages keys used for encryption within a system or application that is separate from the actual host systems - KMS will typically generate, secure, and validate keys)
KPA - known-plaintext attack (a cypher attack method in which an attacker has access to both the plaintext and the ciphertext and, through reverse engineering, attempts to determine the original key used to encrypt the cyphertext)
KPI - key performance indicator (a measure of performance, chosen from a pool of indicators, considered of particular significance, when it comes to determining whether goals are being met or a system is performing as intended)
KRI - key risk indicator (a meaure of risk considered of higher importance, or of greater significance, than other activity measures, when it comes to assessing overall risk)