Ключевые слова: camouflaged, clandestine, classified, confidential, confidentiality, covert, covertly, discreetly, disguised, envelope, furtive, hidden, labeled, low key, mysterious, positioned, private, restricted, sealed, secret, secure, small, sneaky, stealthy, surreptitious, table, undercover, undisclosed, unnoticed, unobserved, unobtrusive, unrevealed, unseen, veiled,