Just awful. The book lost credibility with me fast. It involves a contemporary consultant to the CIA who is supposed to not ever heard of the NSA. I'd heard of the NSA--as someone casually interested in public policy--decades ago. A very well-researched book on the agency, The Puzzle Palace, was published in the 80s. There is a note at the front of the Digital Fortress claiming Brown consulted with anonymous sources in the agency for his novel. If Brown actually had, you'd think they might have told him right off that his hero would have to be a dolt never to have heard of the NSA, and certainly wouldn't be consulted by the CIA. A minor thing? Perhaps. But coming so early in a not-very-well-written book, it killed it for me.