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Confidentiality is a set of rules that limits access to a certain data. Privacy is the ability of an individual/group to choose which data about himself/themselves is shared and given access to. Therefore, privacy is obtained through confidentiality. Anonymity is the ability of an individual/group to keep their identity secret. Note that confidentiality ...


Confidentiality is about a data, whereas privacy is about a person/group of people/organization. Every data belongs to a person. Every person is identified by his data. So these 2 notions extend each others. Interpreting one of them as being a sub-characteristic of an other is correct at your will.


I agree that these terms overlap and I also have a hard time differentiating between them in the context of read-access (where Authenticity can not mean the assurance of information 'being authentic' - originating from a known source, but only Authentication as an agent with certain access privileges). But here are some examples involving write-access in ...

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