It’s a small book written by a senior BT engineer some time ago, in which various ways were given to gain access to communication satellites (and others) and how to use these systems without payment. This was not a hacker’s handbook as everything in was legal. It’s just that it was not available to the general public as it contained mostly engineering info. However it was upon its release into the wild (by mistake) by a disgruntled employee that the British Government decided to make it a criminal offence to be in possession of same. It also contained information on how to make any phone call from the UK at nil charge to anywhere in the word by applying a (simple) mathematical formula to the telephone number dialled. In addition information was supplied that by adding one resistor and a capacitor to the incoming phone line you never received a telephone bill.
Even worse was that all digital exchanges could be accesses (via the engineers mode) so that you could ring someone, when they lifted the handset you could generate the dial-tone but when they replace the receiver the phone was still on-line so you could hear everything spoken in that room. This required the software that came with the book as did satellite access.
This book I last observed about eight months ago, the person did not have the software that originally went with it.
Our government views this as a security risk. I wonder why as it’s designed into all digital exchanges worldwide including the US!!
