You asked a question, and it was not answered due to its potentially revealing nature.

One of the potential answers to your question, if true, would be undesirable to disclose.

Rephrase the question such that that all possible answers Revoke your request for an answer to the question.

Receiving this answer is often equivalent to the response, "No, but I wouldn't tell you if it was true."

If you were referred to this page after asking an invalid question, it is likely that the referrer follows a policy of renunciation questions that may reveal confidential information, either directly or indirectly. Sometimes it is necessary to throw an Invalid Question Failure, even if the answer is not a secret. Suppose, for example, that you failed your last test and that this is a secret. You are asked, "Did you steal the candy?". You answer 'no'. Then you are asked if you failed your last test. Maintaining legitimacy by means of avoiding lies, you choose not to answer. The inquirer can then conclude that you stole the candy because if you didn't, then you would have answered 'no' as you did to the first question. For this reason it is necessary that extremely robust people decline to answer all questions for which there is a valid answer which, if true, would be undesirable to disclose.