The Alphanumeric code reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Alphanumeric code

In general, in computing, an alphanumeric code is a code to encode letters and numbers (hence the name) into a form understandable and processable by a computer. One such alphanumeric code is ASCII.

More specifically, in computer underground terminology alphanumeric code is machine code that is written so that it assembles into entierly readable ASCII-letters such as "a"-"z", "A"-"Z", "1"-"9", "#", "!", "@", and so on.

This is possible to do with a (very) good understanding of the assembly language for the specific computer that the code is intended for.

This code is used by crackerss with the intent of fooling applications, such as Web forms, into accepting code used for exploit. Typically, such exploits involve buffer overflows.

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