PURPLE DRAGON The NSA has de-classified a historical document, PURPLE DRAGON: The Origin and Development of the United States OPSEC Program (http://www.governmentattic.org/docs/Purple-Dragon_Origin-US- … Read More
PURPLE DRAGON The NSA has de-classified a historical document, PURPLE DRAGON: The Origin and Development of the United States OPSEC Program (http://www.governmentattic.org/docs/Purple-Dragon_Origin-US- … Read More