Digital Fortress is a techno-thriller novel written by American author Dan Brown.
One weekend, the NSA’s top cryptographer, Susan Fletcher, gets an call from her boss, Commander Strathmore, to come to work. She arrives to the shocking news that TRANSLTR, the NSA’s incredibly fast and infallible code-breaking machine against which even the best computer encryption software is useless, has at long last come face to face with its nemesis. Codenamed the Digital Fortress, it is an unbreakable code created by an ex-NSA cryptographer, Ensei Tankado, who had threatened to make it available for public use if the NSA didn’t make TRANSLTR’s existence known to the general public. As the repercussions of this comprise a deadly threat to the nation’s security, it sends shockwaves through the corridors of the NSA.
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