Ключевые слова: abstract, burn, burning, classified, conceal, concept, confide, confidential, confidentiality, data, destroy, document, espionage, file, forbidden, hide, imprint, intelligence, letter, mark, mysterious, organization, paper, paperwork, political, privacy, private, protection, report, secrecy, secret, secure, security, spy, storage, top secret, topsecret, warning,