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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...How to stop the spam registrations?How to stop the spam registrations?
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5/21/2014 11:15 AM
 
DnnModule.com


DnnModule.com
Joined: 7/2/2004
Posts: 362
It seems our modification works. Now we stop receiving spam registration since yesterday. And we spend about 1 hour to empty the existing spam users. I like to share our experience.

1. Click "Host - SQL", execute "Select * from users where LastModifiedByUserID>0".
2. You will find 99% of the result user are spam users. However, we can't simply delete them before verify it.
So it is better to open another window, click "Admin - User Accounts", copy and paste user name one by one, click "Search" to find that user.
3. Now click edit icon of that user, if you see advertisement url in user "Web Site" or in "biography", then this user should be a spam.
4. Now you can click the "delete" icon do delete this user.

5. When all spam users are marked as deleted, click "Remove Deleted Users" to remove them from database.

This process works if you don't have too much spam users. If you have too much, you may need to write a piece of code (or write a custom module) to help you to do that.
Over 20 + professional dnn modules for News Article, Store, Video Gallery, Photo Gallery, Ultra Flash Player,YouTube Video, Image Slide show, Skin Chameleon and much more from DnnModule.com
 
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5/21/2014 4:03 PM
 
Dylan (www.innosoftware.net)


Joined: 8/13/2006
Posts: 19
An important thing to note regarding this problem.

If you've simply hidden the registration links/pages from the public it doesn't prevent them from reaching via a back-door of sorts.

If you try this link from a browser that is NOT logged in already, you'll see how the /login.aspx?ctl=register can shortcut scripts to the hidden or missing registration page.

https://www.dnnsoftware.com/login.aspx?ctl=register

I tested this on two of my sites.

One where we entirely hid registration: This simply caused the default DNN registration (no captcha at the time) to appear.

One where we replaced the registration module with OUR in-house registration module: This displayed our custom registration module on the page we set it to use.

The takeaway is that you can't rely on simply hiding the page. The registration itself my have some mechanism (i.e. captcha with its limited effectiveness and/or a better form of human verification like email based validation.)

Thanks!
Dylan Lopez - Solution Developer, INNO Software Inc. E: http://www.innosoftware.net/contact.aspx P: 1-888-INNO-001 / 604-628-4467 W: http://www.innosoftware.net
 
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5/21/2014 7:14 PM
 
Tony Henrich


Joined: 12/15/2008
Posts: 838
I wouldn't say captchas have been broken. There are many kinds of them. Anything that involves the user to solve something is a captcha. A captcha is not just those images with the hard to decipher characters. Even a simple puzzle were you drag a puzzle piece and drop it in the correct spot is a captcha and a good one.

DNNSoftware needs to replace the one they are using. It's one of the most basic and earliest captchas. Move to a more sophisticaed one. Even switch to reCaptcha.

I am interested to know if the hidden extra form textbox helps. It's very simple to implement and doesn't add any work for the visitor.
 
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5/21/2014 7:26 PM
 
Tony Henrich


Joined: 12/15/2008
Posts: 838
Also another idea is that in the verification email, give instruction to do something. Like reply and add a certain word in the subject line or in the body. Bots wouldn't understand this and will blindly look for a hyperlink and do a get with it or just reply as is, which will fail the email verification and therefore discard the bogus registration.
 
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5/21/2014 11:50 PM
 
DnnModule.com


DnnModule.com
Joined: 7/2/2004
Posts: 362
Cathal Connolly posted a blog about this issue, check http://www.dnnsoftware.com/community-... for more details.
Over 20 + professional dnn modules for News Article, Store, Video Gallery, Photo Gallery, Ultra Flash Player,YouTube Video, Image Slide show, Skin Chameleon and much more from DnnModule.com
 
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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...How to stop the spam registrations?How to stop the spam registrations?


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