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Re: Comment Spam: new trends, failing counter-measures and why it's a big deal
From: Gareth Davies <gareth.davies () mynetsec com>
Date: Mon, 13 Feb 2006 13:29:51 +0800
php0t wrote
And a friend of mine has already written a PHP class using GD that can beat 80-90% of common CAPTCHA implementations.Yep.. I repeat. 'Big part of the problem'. Which is nowhere near 'singularly successful solution'. Let's suppose 20% of that spam you see is posted by people doing this all day, getting paid for it. It's probably much less, but this is all a guess, nothing more. Would it not be a solution for the other 80% ? Of course, if you have some statistics that tell me I terribly underestimated that overestimation of 20%, or just introduce new elements that I did not consider, do not hesitate to show it to me, I'm happy with accepting facts. php0t _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
It's not a particularly complex algorithm. What's to stop the spammers investing a little more money.Anyway I have a high traffic blog and I have found since the advent of Wordpress 2.0, Akismet has been extremely successful against even the latest most human like spam.
Spam Karma 2 before that was of course the king. -- Gareth Davies - BS7799 LA, OPST Manager - Security Practice Network Security Solutions MSC Sdn. Bhd. Suite E-07-21, Block E, Plaza Mont' Kiara, No. 2 Jalan Kiara, Mont’ Kiara, 50480Kuala Lumpur, Malaysia Phone: +603-6203 5303 or +603-6203 5920
www.mynetsec.com _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Comment Spam: new trends, failing counter-measures and why it's a big deal Gadi Evron (Feb 12)
- RE: Comment Spam: new trends, failing counter-measures and why it's a big deal php0t (Feb 12)
- RE: Comment Spam: new trends, failing counter-measures and why it's a big deal Nick FitzGerald (Feb 12)
- RE: Comment Spam: new trends, failing counter-measures and why it's a big deal php0t (Feb 12)
- Re: Comment Spam: new trends, failing counter-measures and why it's a big deal Gareth Davies (Feb 12)
- RE: Comment Spam: new trends, failing counter-measures and why it's a big deal php0t (Feb 12)
- Re: Comment Spam: new trends, failing counter-measures and why it's a big deal Valdis . Kletnieks (Feb 13)
- RE: Comment Spam: new trends, failing counter-measures and why it's a big deal php0t (Feb 13)
- RE: Comment Spam: new trends, failing counter-measures and why it's a big deal Nick FitzGerald (Feb 12)
- RE: Comment Spam: new trends, failing counter-measures and why it's a big deal php0t (Feb 12)
- Re: Comment Spam: new trends, failing counter-measures and why it's a big deal Andrew Haninger (Feb 12)