00728cam a2200217 4500 62134118 TxAuBib 20040608120000.0 040608t20041998||||||||||||||||||||eng|u 9780312335168 $19.95 0312335164 $19.95 NjBwBT NjBwBT TxAuBib Brown, Dan. Digital fortress / Dan Brown. Rev. ed. New York : Thomas Dunne Books, 2004. ©1998. 371 p. ; 25 cm. A former National Security Agency programmer threatens to release a mathematical formula that will allow organized crime and terrorism to skyrocket. 20040608.