Last modified: 2006-06-01 02:20:33 UTC

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Bug 2255 - Captcha for registration
Captcha for registration
Status: RESOLVED FIXED
Product: MediaWiki
Classification: Unclassified
User login and signup (Other open bugs)
unspecified
All All
: Normal enhancement with 7 votes (vote)
: ---
Assigned To: Nobody - You can work on this!
http://folktunes.org/wiki/Special:Lis...
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2005-05-27 00:33 UTC by Forrest O.
Modified: 2006-06-01 02:20 UTC (History)
1 user (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Forrest O. 2005-05-27 00:33:36 UTC
This is an urgent request for something to thwart automatic vandalbots from
registering accounts.

Somebody has registered about 250+ false usernames to my young wiki, and I fear
that they are gearing up for an attack.  It isn't clear if there is a way for me
to find out their IP address, delete the accounts, or mass-block them.

True, captchas can be circumvented by offering porn or whatever, but I doubt
this vandal is working on that kind of scale.  A captcha for registration would
be a good solution for young wikis trying to get off the ground without being
messed with.  It could also be useful for anonymous edits, but I'm not concerned
with that.

I have disabled new registrations for now. There are probably other steps and
solutions to take.  Any help would be appreciated.
Comment 1 Brion Vibber 2005-05-27 00:44:47 UTC
I can't vouch for this as I haven't tried it, but was posted on mediawiki-l recently:
http://www.fxparlant.net/Category:Mediawiki#Captcha
Comment 2 FoeNyx 2005-05-27 00:59:03 UTC
read also http://www.w3.org/TR/2003/WD-turingtest-20031105/ about «
Inaccessibility of Visually-Oriented Anti-Robot Tests ». 
Comment 3 Rowan Collins [IMSoP] 2005-05-27 01:07:05 UTC
(In reply to comment #0)
> Somebody has registered about 250+ false usernames to my young wiki, and I fear
> that they are gearing up for an attack.  It isn't clear if there is a way for me
> to find out their IP address, delete the accounts, or mass-block them.

With an administrator login, you can block IPs and/or users by using the page
[[Special:Blockip]] on your wiki. This may require one or more of the variables
listed at
http://meta.wikimedia.org/wiki/Help:Configuration_settings_index#Access to be
set, such as "$wgSysopUserBans = true;", but I couldn't find a relevant help
page this minute.
Comment 4 Forrest O. 2005-05-27 01:10:45 UTC
I will look into adding that to the registration page before I reopen registration.

If a wiki gets hammered before it even has enough users to police it, then
_nobody_ will be able to use it, vision-impared or otherwise.  There are audio
captcha options as well.

Obviously, some bot has made these registrations, and there should be some way
to prevent this from happening.
Comment 5 Forrest O. 2005-05-27 01:15:24 UTC
(In reply to comment #3)
> With an administrator login, you can block IPs and/or users by using the page
> [[Special:Blockip]] on your wiki. This may require one or more of the variables
> listed at
> http://meta.wikimedia.org/wiki/Help:Configuration_settings_index#Access to be
> set, such as "$wgSysopUserBans = true;", but I couldn't find a relevant help
> page this minute.

As far as I can tell, there isn't any way to block the accounts without doing it
one at a time.  If there were a way to find the IP address of a user one could
block it...
Comment 6 Forrest O. 2005-05-27 01:26:33 UTC
http://folktunes.org/wiki/Special:Listusers
Is this a new vandalbot?  It has made the user page useless.
Comment 7 Rowan Collins [IMSoP] 2005-05-27 17:39:07 UTC
(In reply to comment #5)
> As far as I can tell, there isn't any way to block the accounts without doing it
> one at a time.  If there were a way to find the IP address of a user one could
> block it...

I think, although I'm not 100% sure, that with "$wgSysopUserBans=true;" any ban
of a user account will also create a fixed-term "autoblock" on the IP[s?] from
which that account has recently connected. Presumably, the duration of such
blocks is what $wgAutoblockExpiry sets.
Comment 8 Ævar Arnfjörð Bjarmason 2005-05-30 15:56:48 UTC
Changed severity from "critical" to "enhancement".
Comment 9 David Taylor 2005-11-09 19:21:50 UTC
I'm in the process of putting a wiki together, and one of my primary 
concerns is vandalism and bot spam. If my core pages are frequently 
trashed by bots & vandals, I'm sunk.

I'd like to second the request for this feature, preferably 
implemented with both images & audio. Ideally, it would have one flag 
that would allow administrators to enable CAPTCHA solely for 
registration, or enable CAPTCHA for each page edit.

Comment 12 Brion Vibber 2006-01-29 07:49:51 UTC
A captcha plugin is currently in production testing on some Wikimedia sites.
Comment 13 lɛʁi לערי ריינהארט 2006-01-29 21:43:35 UTC
(In reply to comment #12)
> A captcha plugin is currently in production testing on some Wikimedia sites.

http://th.wikibooks.org/w/index.php?title=special:Userlogin&type=signup

Thanks Brion!
Comment 14 Jamie Hari 2006-03-17 05:08:15 UTC
Can I ask for some details on how the Thai Wikibooks implemented this plugin?

Could this be released as an more 'official' extension? I would think with the
proliferation 
and intelligence of some of the newer spam-bots, this would be an extension that
a lot of 
sites would want to implement. Our projects included...

I know this is asking a lot, but it might even make sense to bring into the
core. A great 
deal of sites are using some sort of anti-bot tactics. (Wikis, Bulletin-boards,
blogs, etc.)
Comment 15 Rob Church 2006-03-17 07:10:46 UTC
See the ConfirmEdit extension and the FancyCaptcha plugin in CVS. Requires
MediaWiki 1.6 for some of the hooks.
Comment 16 Jamie Hari 2006-03-17 14:31:16 UTC
Ahh very cool. Thank you. 
Is that python script by Neil necessary as well I assume?
Comment 17 Rob Church 2006-03-17 19:12:44 UTC
Yes, it's what generates the captcha images.
Comment 18 Rob Church 2006-06-01 02:20:33 UTC
Closing as FIXED, since a working captcha extension is now available.

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