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Enhanced Captcha Image Verification - stop bots from signing up!! Details »
Enhanced Captcha Image Verification - stop bots from signing up!!
Mod Version: 1.11, by steadicamop (Member) steadicamop is offline
Developer Last Online: Dec 2014 I like it Show Printable Version Email this Page

vB Version: 3.6.8 Rating: (63 votes - 4.89 average) Installs: 871
Released: 26 Nov 2006 Last Update: 27 Nov 2006 Downloads: 4753
Not Supported Uses Plugins Template Edits Additional Files  

Title : Enhanced Captcha Image Verification

Version : 1.1

Coder : Andy Calderbank & Jason Williams

Purpose
: Add extra Image Verification to the registration process, using an alternative system to the Captcha system.

Why : It would appear that spammers can now "read" the Captcha codes and overcome the verification process.

How : This extra feature uses images which are harder for a spam program/bot to interpret than text characters. The user has a choice of 4 randomly displayed images, and the answer is given below. The user must click on that image to proceed, if the incorrect image is selected an error message is shown. The images are randomly shown (from however many are in the directory - you can have as many as you want, just has to be more that 4!) and are automatically created from the images/verification/ directory - all on the fly. Sample images are included with this release, but you can use your own - I recommend using 100 x 100 pixels, in .jpg format and naming the image with a meaningful title (ie A House.jpg) - the extension is stripped so only the filename itself is shown.

To further enhance security, the images are passed through a script which means that none of the images on the screen have file names - and cannot be associated to the question by title alone.

I have been testing this on my forum and have found it to be effective - I cannot guarantee that this will stop all spamming, but this relies more on human input than a computer "reading" the image.

Important : This has been tested on 3.6.2 - I cannot guarantee it will work on anything above, please test with caution - and as always BACKUP FIRST! This will not work on anything below 3.6.0.

Demo : http://www.steadiforum.com/register.php

I hope this is help to the VBulletin community as I know this is a growing problem. I don't fancy the thought of trawling through hundreds of new members deleting stupid usernames and spam posts.

Installation :
  1. Upload the verification/ directory to your images/ folder - make sure .htaccess and show.php are present - otherwise it won't work.
  2. Import Product - product-image_verification.xml

Upgrading :
  1. Upload show.php to the images/verification/ directory.
  2. Import Product - product-image_verification.xml - select Allow Overwrite to enable upgrade.

Requirements : GD Libraries installed

File uploads : 39 (including images)
Files to Import : 1
New Templates : 1
New Phrases : 5
Uses Hooks : 1
New Queries : 0

History :
v1.0 - Original release
v1.01 - Slight code change for forums in sub-directories (thanks go to Barakat for solving this one)
v1.1 - Issue resolved with Windows servers also template clean up for xhtml compliance
v1.11 - Added version check function, minor upgrade.

Done - if you like please click install! (and I won't ask for any donations as long as you click Nominate for MOTM!)

Don't forget you don't have to use the provided images - you can customise these to any you wish - I've used ones that are hopefully universal and everyone will recognise.

Download Now

Only licensed members can download files, Click Here for more information.

Screenshots

Click image for larger version

Name:	imageverification1.jpg
Views:	8586
Size:	36.6 KB
ID:	56611   Click image for larger version

Name:	imageverification2.jpg
Views:	4475
Size:	24.5 KB
ID:	56612  

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  • This modification may not be copied, reproduced or published elsewhere without author's permission.
Similar Mod
Mod Developer Type Replies Last Post
Miscellaneous Hacks Enhanced Image Captcha - Stop bots from signing up! steadicamop vBulletin 3.7 Add-ons 165 21 May 2015 00:36

  #16  
Old 26 Nov 2006, 13:18
steadicamop's Avatar
steadicamop steadicamop is offline
 
Join Date: Jul 2004
Real name: Jason Williams
It's no problem - I need to upgrade to 3.6.4 so it's a good a time as any to resolve any issues - there do appear to be template changes from 3.6.2 -I will check into this and release an update as soon as I can.
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  #17  
Old 26 Nov 2006, 13:43
Barakat's Avatar
Barakat Barakat is offline
 
Join Date: Nov 2004
Real name: Barakat
just in the image_verification template need to change the links ......
that if you have a subfourm fourm
and its works on 3.6.4


works greate thanks
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  #18  
Old 26 Nov 2006, 14:28
steadicamop's Avatar
steadicamop steadicamop is offline
 
Join Date: Jul 2004
Real name: Jason Williams
Version 1.01 is out now - thanks to Barakat for the info that solved the issue - checking on version 3.6.4 now for any others.
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  #19  
Old 26 Nov 2006, 14:43
thedvs thedvs is offline
 
Join Date: May 2002
Now it works brilliantly on 3.6.4, many thanks steadicamop
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  #20  
Old 26 Nov 2006, 15:17
muttt muttt is offline
 
Join Date: Dec 2003
Tried to install it but the pictures don't show up... any thoughts?

[Edited to Add:] In light of GNeRaL's message immediately after mine, let me add that I don't get red Xes, I just get empty space where the pics should be.

Last edited by muttt; 26 Nov 2006 at 15:25.
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  #21  
Old 26 Nov 2006, 15:23
GNeRaL GNeRaL is offline
 
Join Date: Nov 2006
Real name: Muhsin Issever
Doesnt working correctly:

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  #22  
Old 26 Nov 2006, 15:54
steadicamop's Avatar
steadicamop steadicamop is offline
 
Join Date: Jul 2004
Real name: Jason Williams
Working on this one - I used a clean install of 3.6.4 and have the same problem, will get back with an update very soon.
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  #23  
Old 26 Nov 2006, 16:18
TheBlackPoet's Avatar
TheBlackPoet TheBlackPoet is offline
 
Join Date: May 2006
Real name: Malik Ali Shabbazz
that worked!!!! thank you for sticking to it and solving the issue!! now i feel like my site is more secure....!!!
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  #24  
Old 26 Nov 2006, 16:21
muttt muttt is offline
 
Join Date: Dec 2003
thanks very much for being so attentive to the issue!
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  #25  
Old 26 Nov 2006, 16:32
steadicamop's Avatar
steadicamop steadicamop is offline
 
Join Date: Jul 2004
Real name: Jason Williams
Originally Posted by GNeRaL View Post
Doesnt working correctly:

It looks like you don't have GD Libraries installed, the images are processed through that for security reasons - unfortunately at this point there's no way around it - if you run your own server it's possible to get this installed fairly easily or maybe ask your ISP if they can install it for you.

Sorry I can be of more help.

Jason
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  #26  
Old 26 Nov 2006, 16:36
steadicamop's Avatar
steadicamop steadicamop is offline
 
Join Date: Jul 2004
Real name: Jason Williams
You will need to check if you have GD installed - you can check this in the AdminCP -> Maintanence -> View PHP Info then scroll down and find GD - image attached to show if it is installed and working.

This is a requirement of the script to secure the images from being read.
Attached Images
File Type: jpg gd.jpg (37.7 KB, 167 views)
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  #27  
Old 26 Nov 2006, 16:39
muttt muttt is offline
 
Join Date: Dec 2003
Originally Posted by steadicamop View Post
You will need to check if you have GD installed - you can check this in the AdminCP -> Maintanence -> View PHP Info then scroll down and find GD - image attached to show if it is installed and working.

This is a requirement of the script to secure the images from being read.
Yup, installed and working for me.
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  #28  
Old 26 Nov 2006, 17:18
omsa's Avatar
omsa omsa is offline
 
Join Date: Jul 2004
I would like to install this but I don't see show.php anyplace in my tree. What is it, how do I get it, and what location should it be in?

Thanks!!!!!
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  #29  
Old 26 Nov 2006, 18:09
NiTRoN NiTRoN is offline
 
Join Date: Dec 2005
Real name: Big Kauhuna
Originally Posted by omsa View Post
I would like to install this but I don't see show.php anyplace in my tree. What is it, how do I get it, and what location should it be in?

Thanks!!!!!
show.php should be in same directory as your "verification" folder is..

/forum-root/images/verification <-there you should have .htaccess and show.php and all the images used for verification.
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  #30  
Old 26 Nov 2006, 18:40
cavyspirit cavyspirit is offline
 
Join Date: Jan 2004
Based on your research, what's your opinion of this hack: http://www.vbulletin.org/forum/showthread.php?t=124828 which asks an admin-defined, forum-specific random question? Which way is better to go. Can/should we install both?
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