What are the advantages of not publicly disclosing a security strategy or of withholding portions of a strategy due to the classified nature of the information?

What are the advantages of not publicly disclosing a security strategy or
of withholding portions of a strategy due to the classified nature of the
information? What are the disadvantages?What are the advantages of not publicly disclosing a security strategy or
of withholding portions of a strategy due to the classified nature of the
information? What are the disadvantages?

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