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Re: [Axiom-developer] Mathaction and Spammers

From: Ralf Hemmecke
Subject: Re: [Axiom-developer] Mathaction and Spammers
Date: Thu, 06 Apr 2006 14:23:22 +0200
User-agent: Thunderbird 1.5 (X11/20051201)

Hi Bill,

On 04/06/2006 02:06 PM, Bill Page wrote:
On April 6, 2006 7:27 AM Ralf Hemmecke wrote:
Look at

it seems that spammers somehow can extract the mathaction email-address and write to such a page.

I have deleted the spam. In fact I have regularly deleted about
3 or 4 examples of this kind of spam on the Axiom Wiki almost
everyday over the last month or so. This spam is not coming via
email. Believe it or not some abuser actually goes to the trouble
of posting such messages to random pages. The point, I think, is
to increase the "link counts" to the target pages by "seeding"
links to the pages from where ever wiki software allows them to
add links. This makes it much more likely that the search engines
like google will index their pages.

Very cool! I really hope that some day such people can be sued and punished. They cost other people's time.

I regularly use "recent changes" to check for this stuff and
delete it using the Zope undo feature (if possible, sometimes it
is not if there has been an later update to the wiki), or by
copying an earlier un-spammed version of the page to current.

Well actually you deserve a BIG THANKS for all this work. Where would Axiom be today without all your effort.

Can there something be done (apart from manually removing it)?

One thing that would slow them down at least would be to require
users to identify themselves via 'preferences' before being allowed
to post a comment.

But they still could edit the page, I have no idea whether they could let a program automatically edit a page, though.

Bill, is there a way to include a spamchecker?

I will look into this some more, but it is difficult on the web.
The Zwiki developers have been struggling with this for some time.

I am not so much into this busines, but what I think is that before anything from a comment is added to the page it is sent through a spam-filter like SpamAssassin using its Bayesian option.


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