Implementing Captcha Validation With OWA 2003 and Forms-Based Authentication

Overview

The word 'Captcha' stands for Completely Automated Public Turing test to tell Computers and Humans Apart. Most World Wide Web users will have seen this kind of test in the form of a picture of a word (usually distorted), which the user must type into an input box to prove that they are a real person, and not just a spambot, or some other computerized agent trawling the Web for exploits. This paper will give an example of how Captcha could be added to Outlook Web Access 2003 by modifying the FBA logon.asp file.