The Computer Privacy Handbook was a great book in its time. Unfortunately, that time has long since passed.
The manuscript itself was written in 1994. At the rate things move in the computer industry, it did not take long before the material became dated. I think that we all know how quickly computer books can go from being state-of-the-art to obsolete within a matter of months.
Probably the best part of the book was its tutorial about how to use PGP (Pretty Good Privacy) for DOS. Unless you are still using a 386, PGP for DOS is probably not the encryption method of choice for you. A large portion of the book is devoted to this tutorial, which is obsolete by anyone's standards.
The remainder of the book largely discusses electronic privacy issues. The issues raised range from the paranoid to the practical. Eerily, many of the "possabilities" discussed by Bacard have already come to pass, in regards to the public's erosion of personal privacy in America. Parts of the book may have seemed Orwellian at the time, but are accepted norms in today's society. It really makes the case for Bacard not being so paranoid after all.
If you are looking for a historical overview of computer privacy circa 1994, or have a need to run PGP in DOS, this book may very well have some relevance for you. There are still some parts of the book that hold up today, but you will have to skip the majority of the material if you are simply reading for modern day relevance. I'm giving it three stars due to its relevance at the time it was released. Don't take that number literally if you are buying this to use as anything other than as a history book.