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Definition: possession


The ownership or control of information, as distinct from confidentiality. For example, if confidential information such as a user ID-password combination is in a sealed container and the container is stolen, the owner justifiably feels that there has been a breach of security even if the container remains closed (this is a breach of possession or control over the information). Possession is one of the six fundamental components of information security (see Parkerian Hexad).