Received: from makus.postgresql.org (makus.postgresql.org [98.129.198.125]) by mail.postgresql.org (Postfix) with ESMTP id 5F3E815B9A79 for ; Tue, 17 Apr 2012 11:53:13 -0300 (ADT) Received: from mail-qa0-f53.google.com ([209.85.216.53]) by makus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1SK9mJ-0004Ty-S4 for pgsql-hackers@postgresql.org; Tue, 17 Apr 2012 14:53:12 +0000 Received: by qadc11 with SMTP id c11so414568qad.19 for ; Tue, 17 Apr 2012 07:52:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=+jhQpys2riw/4kYnqqb4hN3MAF4T2jpsX4dVljM8kDg=; b=b/R4fdrwYvXaFq7lkERQfezQL5w5cFsvePXmU6jF6NT12K8cLYRGq/6wvep2X/d+LA wQK/7ROPHa7TfKgEynNVS1dKbHb+iXIbegsxEiCCFkvemgVJ7Hy0d40mnPD78wj93ixu OzPlCfwC5YClGhia0aYldbMtIosDcnw/m8O/cUXcg5h0YzNTIGSYKe/YWyyVQ4boouKK s5vXV2Ve8bNAdzlIudwxom5lxB0Yb0F/s7ph+C9MO5Lx6ubmzzJeRUCJksO/Li3+6Ci1 kqSdXV8N6m/yq1fB4xF2BGELCm73YCPp/BmY7lyZtL7zilGKZIBF6FCCRFaFdUWvJORY W5Iw== Received: by 10.224.9.75 with SMTP id k11mr21308922qak.17.1334674379120; Tue, 17 Apr 2012 07:52:59 -0700 (PDT) Received: from speedbook-air.home.jay.fm (home.jay.fm. [173.166.48.118]) by mx.google.com with ESMTPS id gy2sm40562217qab.10.2012.04.17.07.52.57 (version=SSLv3 cipher=OTHER); Tue, 17 Apr 2012 07:52:58 -0700 (PDT) Message-ID: <4F8D83C7.2070306@gmail.com> Date: Tue, 17 Apr 2012 10:52:55 -0400 From: Jay Levitt User-Agent: Postbox 3.0.3 (Macintosh/20120304) MIME-Version: 1.0 To: Alex Shulgin CC: Magnus Hagander , Dimitri Fontaine , Alvaro Herrera , Peter Eisentraut , Robert Haas , Tom Lane , Greg Smith , Pg Hackers Subject: Re: Bug tracker tool we need References: <4F84D3A0.8010808@2ndQuadrant.com> <1334165303.25392.9.camel@vanquo.pezone.net> <28338.1334168965@sss.pgh.pa.us> <1334180206.25392.39.camel@vanquo.pezone.net> <1334350086.9019.16.camel@vanquo.pezone.net> <878vhyeqyq.fsf@commandprompt.com> <4F89ED6C.4030609@gmail.com> <87d379mwan.fsf@commandprompt.com> <1334540156-sup-2520@alvh.no-ip.org> <878vhwnjhv.fsf@hi-media-techno.com> <877gxf7ihf.fsf_-_@commandprompt.com> <4F8C93B2.1000503@gmail.com> <4F8D6E37.5090808@gmail.com> <8739821o79.fsf@commandprompt.com> In-Reply-To: <8739821o79.fsf@commandprompt.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -2.6 (--) X-Archive-Number: 201204/898 X-Sequence-Number: 206701 Alex Shulgin wrote: > Jay Levitt writes: >> (A quick Google shows redmine and especially Trac having spam issues >> of their own.) > > Ugh, redmine (or trac for that matters) has nothing to with handling > spam. I believe a typical bug tracker doesn't handle spam itself, it > lets the mailing system do that. > > Surely you can throw in some captcha plugins to try to reduce the spam > posted from the web UI. Maybe I'm confused - Magnus et al, are we talking spammy issues/issue comments/etc, or are we talking more about exposed email addresses? I assumed we meant spammy issues, like blog comments - spammers post issues and comments with links, to get PageRank to their sites. Email defenses wouldn't help here. Captchas are fairly pointless nowadays, assuming you have someone dedicated enough to write a spambot against your bug tracker. Most of them (even reCAPTCHA!) can be >80% defeated by software - many 99% - and there are millions of humans hanging out on Mechanical Turk who'll solve them for you 100%. Modern anti-spam ends up being a machine learning and systems exercise.. but that's another mailing list :) I think Google gets more use out of reCAPTCHA for OCR tweaking than for anti-spam. Jay