Unauthorized disclosure of Confidential information could be expected to jeopardise national security. Unauthorized disclosure of Secret information could have serious consequences for national security.
Tests for confidentiality determine whether unauthorised disclosure is possible. When performing confidentiality tests, you are attempting to determine whether data is being disclosed to people for whom it was not intended. Confidentiality testing ensures that authentication and encryption mechanisms function in accordance with security requirements. Proper authentication ensures that only authorised users can access the system and view the data.
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I think It's either the second or last option. I'd go with the last option though.
