[91856] in North American Network Operators' Group
Re: Captchas was Re: ISP wants to stop outgoing web based spam
daemon@ATHENA.MIT.EDU (Paul Jakma)
Tue Aug 15 20:14:34 2006
Date: Wed, 16 Aug 2006 01:13:44 +0100 (IST)
From: Paul Jakma <paul@clubi.ie>
To: Simon Waters <simonw@zynet.net>
Cc: nanog@merit.edu
In-Reply-To: <200608100851.30199.simonw@zynet.net>
Mail-Copies-To: paul@jakma.org
Mail-Followup-To: paul@jakma.org
Errors-To: owner-nanog@merit.edu
On Thu, 10 Aug 2006, Simon Waters wrote:
> I've no doubt some captcha can be invented in ASCII, but this isn't
> it.
'tis. It works for at least one blog platform, where I've never once
had comment spam.
> a kid), and it would be relatively trivial to code it to handle the
> types of questions for this kind of test.
Sure, so change the questions.
The ultimate "captcha defeating AI" is already in-use by spammers by
the way - humans (get humans to "solve" captchas in return for some
reward, e.g. porn). ASCII or image matters not a jot to those.
ASCII captches are no less effective than image-captcha just without
the nasty "ban the blind from the internet!" side-effects.
regards,
--
Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A
Fortune:
byob, v:
Believing Your Own Bull
