The American Connection

responded. ‘You should just use my program.’ He then gave Force the source code for his simple automated scanning program, along with instructions.

Force went through the program and decided it would serve as a good launchpad for bigger things, but it had a major limita- tion. The program could only handle one connection at a time, which meant it could only scan one branch of a network at a time.

Less than three months later, Force had rewritten Bowen’s program into the far more powerful DEFCON, which became the jewel in the crown of the Australian hackers’ reputation. With DEFCON, a hacker could automatically scan fifteen or twenty network addresses simultaneously. He could command the computer to map out pieces of the Belgian, British and Greek X.25 communications networks, looking for com- puters hanging off the networks like buds at the tips of tree branches.

Conceptually, the difference was a little like using a basic PC, which can only run one program at a time, as opposed to operating a more sophisticated one where you can open many windows with different programs running all at once. Even though you might only be working in one window, say, writing a letter, the computer might be doing calculations in a spreadsheet in another window in the background. You can swap between different functions, which are all running in the background simultaneously.

While DEFCON was busy scanning, Force could do other things, such as talk on Altos. He continued improving DEFCON, writing up to four more versions of the program. Before long, DEFCON didn’t just scan twenty different con- nections at one time; it also automatically tried to break into all the computers it found through those connections. Though the program only tried basic default passwords, it had a fair degree of success, since it could attack so many network addresses at once. Further, new sites and mini-networks were being added so quickly that security often fell by the wayside in the rush to