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Multiple Account Detection & Prevention Details »
Multiple Account Detection & Prevention
Mod Version: 1.1.3, by Kiros72 (Member) Kiros72 is offline
Developer Last Online: Sep 2013 I like it Show Printable Version Email this Page

vB Version: 3.7.x Rating: (87 votes - 4.87 average) Installs: 1040
Released: 17 Dec 2008 Last Update: 01 Apr 2009 Downloads: 5806
Not Supported Uses Plugins Additional Files Translations  

It happens all of the time. Some members will make multiple accounts to back their own opinion or get an extra vote in a poll. Here's a modification that will detect and prevent multiple accounts, as well as notify the administration about multiple accounts. Inspiration for this modification came from the work of MPDev (creator of the Multiple Account Login Detector) and randominity (creator of the Multiple Account Registration Prevention). This is basically a combination of those two modifications but with new and improved functionality.

This is not an update to the "Multiple Account Login Detector (AE Detector)" nor is it an update to the "Multiple Account Registration Prevention." If you have either one of these (or both of them) installed, you should uninstall them before installing this modification.

With the initial release of Multiple Account Detection & Prevention, I believe that I have fixed previous bugs/complications as well as improved the efficiency and logic of the code. This is my first publicly released modification. I would appreciate any comments and suggestions!

Confirmed! This works perfectly on all vBulletin 3.6, 3.7, and 3.8 versions.

Unfortunately, I cannot give support right now. I may be able to help periodically, but until my schedule yields some more free time, I won't be much support. Please check back in a week or two.

Basic Details
File Edits: None
Template Edits: None
New Files: 6
Hooks/Plugins: 3
Global Phrases: 36
Install Time: 2 Minutes or Less
Install Difficulty: None, Very Easy

Features and Settings
- Login Detection
- Registration Prevention (Multiple Methods)
- Ignore Child Accounts
- Ignored Users
- Ignored Usergroups
- Ignored ISPs
- Prevention Usergroup
- IP Address Based Prevention
- Extended IP Address Prevention
- IP Address Time Inclusion
- Banned Account Check
- Primary Banned Usergroup
- Cookie Expiration Time
- Cookie Refreshing
- Cookie Name
- Cookie Reset
- Multiple Account Reporter
- Reports via PM
- PM Report Recipients
- Reports via New Thread
- Forum for Report Threads
- Verbose Mode

How it Works
With every newly recognized login/registration, an account-counting cookie is set (or added onto) with the member's User ID. Depending on the settings, Multiple Account Detection & Prevention will analyze the cookie during login/registration to see if there are any multiple accounts.

Login Detection offers cookie-checking and reporting. Registration Prevention offers the same thing, plus more advanced features. First of all, when it prevents an account from registering, it actually moves the registrant to the Prevention Usergroup so that the administration can review the case. This also allows for customized privileges for recognized multiple registrants. Registration Prevention also has IP address detection which finds out just as much information about users. Depending on an administrator's preference, this modification can also reban a new registrant if one of their previous accounts has been banned. In fact, if the administration wishes, multiple registrants can simply be denied registration all together.

Whenever there is a detection/prevention, the modification will report the information to the administration through private messages, a new thread, or both (depending on settings). The Multiple Account Reporter can be any valid user.

Known Issues
- vB Optimise users: Reporting via thread seems to get messed up by vB Optimise, so try reporting via PM instead.
- PhotoPost vBGallery users: The registration handling appears to not work properly when PhotoPost vBGallery is enabled.

From what I can tell, these known clashes have been caused by the other modification's coding. The author of vB Optimise will not even work with me to fix it. Until they improve their coding, I'm not sure if I can do anything about these issues. As far as I know, administrators that do not use the above modifications will not have any problems.

Installation / Upgrade
Unzip the package (, upload the files to your forum location, and import the product file (allow overwrite if upgrading). Please read the ReadMe.txt file that is packaged with the modification for more information.

Please remember to mark this modification as installed if you use it!
If you like it, nominate it for the Mod of the Month!

Thank you!

Download Now

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


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Views:	4206
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ID:	91482  

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  • This modification may not be copied, reproduced or published elsewhere without author's permission.
Similar Mod
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Administrative and Maintenance Tools Multiple Account Registration Prevention randominity vBulletin 3.6 Add-ons 123 09 Jun 2011 16:59
Multiple Ips detection luroca vBulletin 3.5 Add-ons 8 28 Apr 2010 10:35
Multiple Account Registration Prevention randominity vBulletin 3.5 Add-ons 4 18 Oct 2006 09:18

Old 06 Feb 2012, 00:37
Jaejoong1 Jaejoong1 is offline
Join Date: Dec 2010
Does anyone know if there is an option that limits how much one can register per IP?
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Old 08 Mar 2012, 07:31
tinhlt tinhlt is offline
Join Date: Aug 2011
This works perfectly on vBulletin 4.1.11
Thanks a lot!
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Old 20 Mar 2012, 15:53
stemmy stemmy is offline
Join Date: Feb 2006
I have installed this hack on 4.1.11 and nothing has happened ??

I have set the setting to what i want and had people try to trip the detector but I get nothing ??

I dont have the hacks installed with known issues.

Can anybody help ??
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Old 04 May 2012, 11:43
Filgga's Avatar
Filgga Filgga is offline
Join Date: Jul 2007
This works on 4.1.11; but am worried as the Developer was Last Online since Oct 2011... We need someone to take care of this and keep it updated for vB4 users.
I'm back, hell was full
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Old 24 May 2012, 18:11
Hawk7173 Hawk7173 is offline
Join Date: Dec 2004
Works in 4.1.3 however some of the features do not work.
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Old 12 Jul 2012, 13:27
vBMerkezi vBMerkezi is offline
Join Date: Jun 2012
thank you
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Old 15 Jul 2012, 13:24
V8Owner V8Owner is offline
Join Date: May 2004
Does anybody have this running on 4.2?
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Old 15 Jul 2012, 15:04
New Joe's Avatar
New Joe New Joe is offline
Join Date: May 2009
Originally Posted by V8Owner View Post
Does anybody have this running on 4.2?
Yes, works fine.
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Old 15 Jul 2012, 15:14
princesspepper princesspepper is offline
Join Date: May 2010
Originally Posted by V8Owner View Post
Does anybody have this running on 4.2?
Yes. I have it running on VB4.2 PL2
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Old 21 Jul 2012, 15:09
Iari Iari is offline
Join Date: Feb 2011
its killed my forum
my users and me cant login <.<
i canot get to the acp and delete it...
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Old 22 Jul 2012, 04:10
thienhi228 thienhi228 is offline
Join Date: Jan 2010
Good mod! Please build for vbb 4.2.x ^^
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Old 28 Aug 2012, 13:58
IGCEMA IGCEMA is offline
Join Date: Sep 2007
So people have this running on 4.2.2 with no issues?
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Old 03 Nov 2012, 21:36
RedTurtle's Avatar
RedTurtle RedTurtle is offline
Join Date: May 2006
This causes an issue if you have installed and a duplicate user registers.

On a new user's registration it shows the error message as if a user tried to post a link (which I think is caused by the system trying to create a thread for a duplicate user per this modification).
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Old 01 Dec 2012, 02:37
furnival furnival is offline
Join Date: Mar 2008
Will install this on a VB 4.2 board and report if it doesn't work. This worked a treat on my VB 3.8 board, a must-have weapon against the hordes!
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Old 04 Dec 2012, 19:23
Alan_SP's Avatar
Alan_SP Alan_SP is offline
Join Date: Nov 2009
It works for me.
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