[OSM-dev] openstreetmap.org as target for spamming?

Graham Jones (Physics) grahamjones at physics.org
Thu Apr 9 08:15:48 BST 2009


I am intrigued - what does the bayesian filter try to do?  bayesian
statistics has always been too hard for me to get my head around - Can you
point me to a decent explanation please?

Graham.

2009/4/9 Stefan Breunig <stefan at mathphys.fsk.uni-heidelberg.de>

> Don't add a captcha. They get cracked anyway and just make it harder
> for everyone. Adding a bayesian filter should be sufficient after a
> little training (it works for josm.openstreetmap.de) and requires no
> extra effort from the user.
>
> Greetings
> xeen
>
> On Thu, Apr 9, 2009 at 08:29, Frederik Ramm <frederik at remote.org> wrote:
> > Hi,
> >
> > Stefan Keller wrote:
> >> Usually we try to ignore spam, but now it seems, that openstreetmap.orghas
> >> become some spam target (see below).
> >
> > Uh-huh. Good you noticed that. This means they actually have gone
> > through the trouble of writing a script that creates OSM accounts AND
> > confirms the link in the e-Mail they get... great news, we'll hit one
> > million users rather quickly now ;-)
> >
> > Glad they haven't started user diaries yet ;-)
> >
> > Maye someone with Rails skills could quickly grab an existing captcha
> > solution and add it to
> >
> http://trac.openstreetmap.org/browser/sites/rails_port/app/controllers/user_controller.rb
> ?
> >
> > Bye
> > Frederik
> >
> > --
> > Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"
> >
> > _______________________________________________
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> > dev at openstreetmap.org
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> >
>
>
>
> --
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-- 
Dr. Graham Jones
Hartlepool, UK
email: grahamjones139 at gmail.com
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