bruce wrote:
however, i still don't have a good answer to my question regarding how easy (or hard) it is to detect if a query that should have originated with your app's form is coming from a 3rd party/external site? am i missing something here?
Possibly. I think you're missing the fact that every request sent to your web server comes from a remote site. The requests are sent by your users, so they come from all over the place.
In general, this isn't a concern. Things like spoofing forms is not something you can prevent, nor does it matter - our job as developers is to make users play by our rules. How they choose to do so is irrelevant.
The one exception is CSRF, which I briefly described earlier. The standard protection against CSRF is to use tokens in your forms, a technique described in the PHP Security by Example talk:
http://brainbulb.com/talks/php-security-by-example.pdf Hope that helps. Chris -- Chris Shiflett Brain Bulb, The PHP Consultancy http://brainbulb.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
