Digital fortress. Brown D.

The author of the Superbesseller for decades offers you to hack another code - a superficial, melting danger and threat to the whole world! But... who invented this code?! What is he achieving?! Why did you enter the ruthless game with the US National Security Agency?! The weapon of the mysterious enemy is just a set of characters and letters. The best cryptograph of America Susan Fletcher is taken for the decoding. And what she discovers, puts intolerant not only the most important developments of the US intelligence services, but also the fate of millions of people... From that moment, a real hunt begins on Susan...