[GRASS-user] Cannot get past Wiki captcha

Benjamin Ducke benducke at fastmail.fm
Sun Nov 27 10:33:30 EST 2011

> Unfortunately, reCAPTCHA might be a victim of its own success - as of
> 2011, some spammers appear to have figured out a way to bypass it,
> either through character recognition or by using humans. For that
> reason, it is not necessarily recommended.

I can confirm this. On another site that I manage, based on
phpBB, I get unbelievable amounts of spambot requests to
open accounts. Apparently, simple graphical captchas no
longer hold them back. I think math captchas are a good idea.
Plus, it's free brain exercise :)



> Part of the weakness of the ReCaptcha module is that ConfirmEdit
> doesn't include any penalty mechanism, so spam bots can simply keep
> trying to bypass the CAPTCHA until they get through. This is an issue
> that is strongly worth addressing in some way.
> Martin
> [1] http://www.mediawiki.org/wiki/Confirmedit
> -- 
> Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa

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