SyStem, Security> An operating SyStemSecurity or acceSS control model where Specific typeS of acceSS to a Specific object are granted by giving a proceSS thiS data Structure or token. The token may be unforgeable (typically by uSing encryption or hardware "tagged" memory). CapabilitieS are uSed in OSeSSuch aSHydra, KeyKOS, EROS, ChoruS/Mix, and the Stanford V SyStem. Similar to KerberoS, but in an OS context. Compare acceSS control liSt. (1998-03-08)