[sr-dev] Wiki site registration updates - OFF-TOPIC

[Edson - Lists]

Just as a side note, I've seem anti-spambots 'captcha systems' (just 
see, not implemented, nor know about a library that implement it) that 
use a dual factor approach: one that you see and one that you know.

Indeed very simple: show an image and ask something about it.
Questions can be: type just the letters, type just the numbers, type 
numbers and letters in pre-defined order (left-to-right,up-down,etc), 
number of colors, of groups, color on the booton right, etc... The 
combination are limited on the imagination. And the best: it increment 
in exponential the way bots have to work.

Does anybody knows a library/system that implement such approach not all 
of them, but at least part of it?

Edson.

Em 01/04/2013 06:27, Daniel-Constantin Mierla escreveu:
> Hello,
>
> as of yesterday, creation of new accounts for Kamailio's wiki site
> requires to answer a project related question. Captcha was useless as
> spam bots were lately going through it easily, creating accounts in a
> rate of approx 50 new registrations per day.
>
> The extra question is asked just after CAPTCHA, see it at:
> - https://www.kamailio.org/wiki/start?do=register
>
> Hopefully the questions are simple enough to allow good people to
> register and difficult enough for spambots to give up. It is not a very
> sophisticated system, let's see if there will be any efforts in reverse
> engineering to break in with bots. So far no new spammer account. If
> they will succeed, at least they learn something useful.
>
> If anyone has difficulties creating wiki accounts, write an email to
> sr-dev mailing list and it will be investigated.
>
> Cheers,
> Daniel
>
> PS. This registration system will last, is not for April 1.
>