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offline Joined: Sep 2007 Location: Promyshlennyi Vorkuta Posts: 164 Thanked: 47
  #1  
Thread Starter Unread 10-16-07
Enhanced Captcha Image Verification (v1.11)

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 that 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 than 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 with 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.

I hope this is helpful 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 the 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
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  #2  
Unread 10-16-07
Works with vB 3.6.8 , thanks.
EvoWRZ®'s Avatar
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offline Joined: Sep 2007 Posts: 35 Thanked: 13
  #3  
Unread 10-17-07
thank you dude Installation : done with my vB 3.6.8
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  #4  
Unread 11-05-07
THANKS
I wanted this one very much
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  #5  
Unread 11-10-07
Hi people

The images do not show after installing! any idea why this is?

any help please???

Cheers

Craig
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  #6  
Unread 11-10-07
Originally Posted by craigrg1509 View Post
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Hi people

The images do not show after installing! any idea why this is?

any help please???

Cheers

Craig
check your image paths
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  #7  
Unread 11-13-07
Just checked and it is in the right place

/htdocs/images/verification

Any more idesa?
Notam's Avatar
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offline Joined: Oct 2007 Posts: 51 Thanked: 2
  #8  
Unread 12-01-07
i too having the same problem
Xashi's Avatar
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offline Joined: Dec 2007 Posts: 5 Thanked: 0
  #9  
Unread 12-10-07
Just checked and it is in the right place

/htdocs/images/verification

Any more idesa?
Try using a different browser, i had the same problem, with using opera, i switched to check it on IE, and they showed....
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offline Joined: Dec 2007 Posts: 7 Thanked: 0
  #10  
Unread 12-14-07
I Was Wondering how people Get This!
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