![]() ![]() privacy systems, for example, voice inversion, in which special equipment is required to recover the message.concealment systems, including such methods as invisible ink, concealing a message in an innocent text, or in a fake covering cryptogram, or other methods in which the existence of the message is concealed from the enemy.Secrecy can exist in a number of different ways: encoding or encryption (where mathematical and technical strategies are used to hide messages), true secrecy (where restrictions are put upon those who take part of the message, such as through government security classification) and obfuscation, where secrets are hidden in plain sight behind complex idiosyncratic language ( jargon) or steganography.Īnother classification proposed by Claude Shannon in 1948 reads there are three systems of secrecy within communication: President Barack Obama and Vice President Joe Biden during updates on Operation Neptune Spear, a mission against Osama bin Laden, in the White House Situation Room, May 1, 2011. A burn bag and security classification stickers on a laptop computer, between U.S.
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