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Unread 06-19-2015, 04:28 PM   #1
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Default How to prevent robots from automatically filling up a form?

I'm attempting to concoct a sufficient hostile to spamming instrument to avert naturally produced data. I've read that procedures like captcha, 1+1=? stuff function admirably, however they additionally introduce an additional step hindering the free brisk utilization of the application. (I'm not searching for anything like that please).

I've taken a stab at setting some shrouded fields in the majority of my structures, with presentation: none; However, I'm verging on certain a robot (which is basically a project) can be designed to follow that frame field id and essentially not fill it.

Do you execute/know of a decent against programmed structure filling-robots technique? Is there something that should be possible consistently with HTML AND/OR server side preparing, and be (very nearly) idiot proof? (furthermore, satisfy no JS, one could essentially impair it, and there goes my against spam system).

Btw I'm making an effort not to depend on sessions for this (like, numbering how frequently a catch is clicked to avoid over-burdens).

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Unread 12-03-2015, 12:08 PM   #2
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An easy-to-implement but not fool-proof (especially on "specific" attacks) way of solving anti-spam is tracking the time between form-submit and page-load.
Bots request a page, parse the page and submit the form. This is fast.
Humans type in a URL, load the page, wait before the page is fully loaded, scroll down, read content, decide wether to comment/fill in the form, require time to fill in the form, and submit.
The difference in time can be subtle; and how to track this time without cookies requires some way of server-side database. This may be an impact in performance.
Also you need to tweak the threshold-time.

Last edited by davefranco; 12-03-2015 at 12:19 PM..

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