On 05/02/11 22:36, Platonides wrote:
praveenp wrote:
There is atleast one successful captcha php
script for Malayalam
Language (
http://sourceforge.net/projects/mlcaptcha/ ,
http://mlcaptcha.blogspot.com/2010/02/blog-post_24.html ). I don't know
whether it can work with mediawiki.
It could be added, although I find that
particular captcha easier for
bots than for humans. And an attacker can easily play with the
parameters to weaken it even more.
Alternatively, you could add a Malayalam wordlist to the current
Wikipedia captcha, which would have the same effect, and has (I hope) a
better visual obfuscation method than this, designed specifically to
resist some of the most recent bot decoding methods.
Perhaps we could have a place to add these wordlists on the meta-wiki or
on translatewiki, to allow people without transmit rights to create
them? All that is needed is about 2,000 short words for each language,
which can be used to create around 4,000,000 possible challenge words,
which will in turn will be used to create an endless stream of captcha
images, no two of which should ever be alike.
The wordlists themselves need not be secret: they are only needed to
create easily-typed strings that are sufficiently large in number to
provide a moderate challenge to brute force guessing.
-- Neil