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   and secured it.

  

   Unfortunately, however, Mathieson had missed Electron's original

   file--the bundle of Zardoz copies. When Electron had mailed the file,

   he had copied it, leaving the original intact. They were still sitting

   on DITMELA under the unassuming name .t. Mailing a file didn't delete

   it--the computer only sent a copy of the original. Mathieson was an

   intelligent man, a medical doctor with a master's degree in computer

   science, but he had forgotten to check the temporary directory, one of

   the few places a hacker could store files on a Unix system if he

   didn't have root privileges.

  

   At exactly 3.30 a.m. Phoenix logged into DITMELA from the University

   of Texas. He quickly looked in the temporary directory. The .t file

   was there, just as Electron had said it would be. The hacker quickly

   began transferring it back to the University of Texas.

  

   He was feeling good. It looked like the Australians were going to get

   the entire Zardoz collection after all. Everything was going extremely

   well--until the transfer suddenly died. Phoenix had forgotten to check

   that there was enough disk space available on the University of Texas

   account to download the sizeable Zardoz bundle. Now, as he was logged

   into a very hot machine, a machine where the admin could well be

   watching his every move, he discovered there wasn't enough room for

   the Zardoz file.

  

   Aware that every second spent on-line to DITMELA posed a serious risk,

   Phoenix logged off the CSIRO machine immediately. Still connected to

   the Texas computer, he fiddled around with it, deleting other files

   and making enough room to pull the whole 500 k Zardoz file across.

  

   At 3.37 a.m. Phoenix entered DITMELA again. This time, he vowed,

   nothing would go wrong. He started up the file transfer and waited.

   Less than ten minutes later, he logged off the CSIRO computer and

   nervously checked the University of Texas system. It was there.

   Zardoz, in all its glory. And it was his! Phoenix was ecstatic.

  

   He wasn't done yet and there was no time for complacency. Swiftly, he

   began compressing and encrypting Zardoz. He

   compressed it because a smaller file was less obvious on the Texas

   machine and was faster to send to a back-up machine. He encrypted it

   so no-one nosing around the file would be able to see what was in it.

   He wasn't just worried about system admins; the Texas system was

   riddled with hackers, in part because it was home to his friend,

   Legion of Doom hacker Erik Bloodaxe, a

   student at the university.

  

   After Phoenix was satisfied Zardoz was safe, he rang Electron just

   before 4 a.m. with the good news. By 8.15, Phoenix had downloaded

   Zardoz from the Texas computer onto his own machine. By 1.15 p.m.,

   Electron had downloaded it from Phoenix's machine to his own.

 

                            [ ]

  

   Zardoz had been a difficult conquest, but Deszip would prove to be

   even more so. While dozens of security experts possessed complete

   Zardoz archives, far fewer people had Deszip. And, at least

   officially, all of them were in the US.

  

   The US government banned the export of cryptography algorithms. To