> Your biggest concern is when you receive user input, and then display that
> input in the form of HTML later. A user could embed malicious JavaScript
> or some variant that performs unfavorable actions. Consider this
> hypothetical example:

Dave is describing cross site scripting -- it's a fascinating topics that
deserves an hours' input from Dr. Google. Also, since we're in the spirit of
it all, here's a related link: (thanks again to Ryan Byrd!)

http://www.bothrops.com/training/php/section.php?lesson=4&section=2#security


Cheers,

-rb


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