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In the context of a capability-based protection system, the term "transfer" is used (here) to refer to the situation where a user receives information when he does not initially have a direct "right" to it. Two transfer methods are identified: de jure transfer refers to the case when the user acquires the direct authority to read the information; de facto transfer refers to the case when the user acquires the information (usually in the form of a copy and with the assistance of others), withoutdoi:10.1145/800215.806569 dblp:conf/sosp/BishopS79 fatcat:cjtbvq552zbf7dqi3s5llkc3be