This led to a raging debate within the comp-sec industry. In one corner, the cookbook purists said that bulletins such as Zardoz were only going to be helpful if people were frank with each other. They wanted people posting to Zardoz to provide detailed, step-by-step explanations on how to exploit a particular security hole. Hackers would always find out about bugs one way or another and the best way to keep them out of your system was to secure it properly in the first place. They wanted full disclosure. In the other corner, the hard-line, command-and-control computer security types argued that posting an announcement to Zardoz posed the gravest of security risks. What if Zardoz fell into the wrong hands? Why, any sixteen-year-old hacker would have step-by-step directions showing how to break into thousands of individual computers! If you had to reveal a security flaw--and the jury was still out in their minds as to whether that was such a good idea--it should be done only in the most oblique terms. What the hard-liners failed to understand was that world-class hackers like Electron could read the most oblique, carefully crafted Zardoz postings and, within a matter of days if not hours, work out exactly how to exploit the security hole hinted at in the text. After which they could just as easily have written a cookbook version of the security bug. Most good hackers had come across one or two issues of Zardoz in their travels, often while rummaging though the system administrator's mail on a prestigious institution's computer. But no-one from the elite of the Altos underground had a full archive of all the back issues. The hacker who possessed that would have details of every major security hole discovered by the world's best computer security minds since at least 1988. Like Zardoz, Deszip was well guarded. It was written by computer security expert Dr Matthew Bishop, who worked at NASA's Research Institute for Advanced Computer Science before taking up a teaching position at Dartmouth, an Ivy League college in New Hampshire. The United States government deemed Deszip's very fast encryption algorithms to be so important, they were classified as armaments. It was illegal to export them from the US.