skippy
Yes, its on my list and it will work like this.
- the register page will maintain a database table with the last time a certain IP address accessed this page. Its an IP address rather than a vB allocated session as the session can be changed very easily with any POST to the page.
- if the register page has already been accessed within a configurable period of time, the page returns an error and no further processing is done. If a time out window is allocated, then a countdown counter is added to the submit button
- the "submit registration" input button is removed from the template and replaced with a javascript implementation of the removed code, ie document.write("<input>...."). The javascript also writes an encoded javascript code block, linking in a AES decrypt function and an encoded key/challenge pair. The script will decode the AES encrypted javascript that will write a random form field. If that form doesnt exist on the post, its a spambot as a non-javascript browser wont see the submit button but rather a "javascript required" message. This differs from other field scripts in that it will have to AES decode javascript and execute (or give this script individual consideration) in order to get the correct field data, where others are easier to process as the spambot can read field text directly out of a HTML page.
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