The hackers, who belonged to the Ministry of State Security, cleared out an astonishing amount of defense information such as “secret plans to develop a supersonic anti-ship missile for use on U.S. submarines by 2020” according to the Post, as well as “614 gigabytes of material relating to a closely held project known as Sea Dragon, as well as signals and sensor data, submarine radio room information relating to cryptographic systems, and the Navy submarine development unit’s electronic warfare library.” Since one gigabyte is equivalent to about a thousand good-sized books, roughly a half-million pages of text, this was an astonishingly large [data] compromise.