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Nonrepudiation is the ability to have proof that a message originated from a specific party

Computer Science

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Nonrepudiation is the ability to have proof that a message originated from a specific party. In an email system, for example, nonrepudiation mechanisms ensure that every message can be confirmed as coming from a specific party or sender.

Answer the following question(s):

1. Do you think nonrepudiation falls under one of the tenets of the C-I-A triad (confidentiality, integrity, and availability)? Why or why not?
2. Is the C-I-A triad adequate when selecting controls for a Windows system? Why or why not?