Digital Fortress is a techno-thriller novel written by American author Dan Brown and published in 1998 by St. Martin's Press. The book explores the theme of government surveillance of electronically stored information on the private lives of citizens, and the possible civil liberties and ethical implications using such technology. When the United States National Security Agency's code-breaking supercomputer encounters a new and complex code—Digital Fortress—that it cannot break, Commander Trevor Strathmore calls in Susan Fletcher, their head cryptographer, to crack it. She... discovers that it was written by Ensei Tankado, a former NSA employee who became displeased with the NSA's intrusion into people's private lives. Tankado intends to auction the code's algorithm on his website and have his partner, "NDAKOTA", release it for free if he dies. Essentially holding the NSA hostage, the agency is determined to stop Digital Fortress from becoming a threat to national security. When Tankado does indeed die in Seville, of what appears to be a heart attack, Strathmore asks David Becker to travel to Seville and recover a ring that Tankado was wearing when he died.
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| Author: | Dan Brown |
| Genre: | Science Fiction, Techno-thriller, Fiction, Mystery |
| Year published: | 1996 |
| Number of editions: | 15 |