Re: [OSGeo-Discuss] Some cialis spam in the wiki...
Just because a user has succeeded at the captcha does not mean he is indeed human. It's been proven by various researchers that beating captchas is entirely possible. Optical character recognition, like that used in flatbed scanner software, can be used with a fairly high success rate. Another technique is to build expert systems to evaluate the images. Another still is to build a map of hashes corresponding to captcha images with the solutions as value. Getting rid of spammers is a real pain. Captchas, IP bans and user registration limits all help but nothing really prevents it. Registration confirmation by humans is, unfortunately, the only way to be certain but not particularly convenient. The only thing I can think of that might work better is to build a filter layer into editing pages that scans the edit for words like "cialis" and if they are present sends an email to system administrators to confirm the edit. This would allow people to occasionally use banned words in legitimate uses but also flag spammers very quickly. René Markus Neteler a écrit : On Sun, Jul 5, 2009 at 3:02 PM, Anne Ghisla wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dave Patton ha scritto: ... There is a MediaWiki Extension for reCaptcha [1] http://recaptcha.net/plugins/mediawiki/ [1] http://recaptcha.net/learnmore.html http://en.wikipedia.org/wiki/ReCAPTCHA It is already active on new user registration, so maybe part of the spam comes from human beings :S, then another way to limitate such spam is ConfirmAccout extension [0], that requires sysops to confirm new users one by one. This is extra load - but removing spam is extra load as well. One am one of them - please don't :) I am dealing with Wikis for many years. These human spammers always went away so far after a period. The overhead to manually delete a page from time to time is much less than confirming manually new users (which is also a non-incentive since they cannot start to hack the Wiki right away...). I don't mind to continue to delete those spam pages manually. Cheers Markus ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
On Sun, Jul 5, 2009 at 3:02 PM, Anne Ghisla wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Dave Patton ha scritto: ... >> There is a MediaWiki Extension for reCaptcha [1] >> http://recaptcha.net/plugins/mediawiki/ >> >> [1] >> http://recaptcha.net/learnmore.html >> http://en.wikipedia.org/wiki/ReCAPTCHA > > It is already active on new user registration, so maybe part of the spam > comes from human beings :S, then another way to limitate such spam is > ConfirmAccout extension [0], that requires sysops to confirm new users > one by one. This is extra load - but removing spam is extra load as well. One am one of them - please don't :) I am dealing with Wikis for many years. These human spammers always went away so far after a period. The overhead to manually delete a page from time to time is much less than confirming manually new users (which is also a non-incentive since they cannot start to hack the Wiki right away...). I don't mind to continue to delete those spam pages manually. Cheers Markus ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dave Patton ha scritto: > On 2009/07/04 8:00 AM, Tyler Mitchell (OSGeo) wrote: >> >> Anne Ghisla wrote: >>> Is this enough to avoid such spam? Is't captcha better? >>> I can have a look at how it can be implemented in user login (I know it >>> is already active when a user adds external links to a page). >> >> Go for it. If you find instructions, I can enable it. > > There is a MediaWiki Extension for reCaptcha [1] > http://recaptcha.net/plugins/mediawiki/ > > [1] > http://recaptcha.net/learnmore.html > http://en.wikipedia.org/wiki/ReCAPTCHA It is already active on new user registration, so maybe part of the spam comes from human beings :S, then another way to limitate such spam is ConfirmAccout extension [0], that requires sysops to confirm new users one by one. This is extra load - but removing spam is extra load as well. HTH, best regards, Anne [0] http://www.mediawiki.org/wiki/Extension:ConfirmAccount -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkpQpEgACgkQzZ3g4YwFFgYQdQCeOLbrsKKFoiTxK5oz9H9Hhkm4 DWkAoIzpVusGZEklVs/25eJiq3J56ln9 =AZ9s -END PGP SIGNATURE- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
On 2009/07/04 8:00 AM, Tyler Mitchell (OSGeo) wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Anne Ghisla wrote: Is this enough to avoid such spam? Is't captcha better? I can have a look at how it can be implemented in user login (I know it is already active when a user adds external links to a page). Go for it. If you find instructions, I can enable it. There is a MediaWiki Extension for reCaptcha [1] http://recaptcha.net/plugins/mediawiki/ [1] http://recaptcha.net/learnmore.html http://en.wikipedia.org/wiki/ReCAPTCHA -- Dave Patton CIS Canadian Information Systems Victoria, B.C. Degree Confluence Project: Canadian Coordinator Technical Coordinator http://www.confluence.org/ Personal website: Maps, GPS, etc. http://members.shaw.ca/davepatton/ ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Anne Ghisla wrote: > Is this enough to avoid such spam? Is't captcha better? > I can have a look at how it can be implemented in user login (I know it > is already active when a user adds external links to a page). Go for it. If you find instructions, I can enable it. Tyler -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkpPbnUACgkQaqHtbnpFV31W9QCeKU7HXtLxxBqUWXMRnUh3upOY hy8AoK/aGo3soMDkLUZSTcDbNloLiPYE =z2ng -END PGP SIGNATURE- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Some cialis spam in the wiki...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Arnulf Christl schrieb: >Rene A Enguehard schrieb: >> Deleting or banning the users won't stop them. What you need to do is >> look at where these people are coming from (IPs) and ban those >directly. >> >> Cheers, >> René > >Thanks for the tip, all blocked now. > >Regards, Arnulf. my 2 cents: Is this enough to avoid such spam? Is't captcha better? I can have a look at how it can be implemented in user login (I know it is already active when a user adds external links to a page). best regards, Anne -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkpPOzgACgkQzZ3g4YwFFgZ3aQCeL7LTBjfnkOdLIRRkSxtN7YX2 lE8An0+XVcaClVqno0Zbe3u43t31SOff =ehH5 -END PGP SIGNATURE- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Rene A Enguehard schrieb: > Deleting or banning the users won't stop them. What you need to do is > look at where these people are coming from (IPs) and ban those directly. > > Cheers, > René Thanks for the tip, all blocked now. Regards, Arnulf. > Arnulf Christl (OSGeo) a écrit : >> Pedro-Juan Ferrer Matoses schrieb: >> >>> I've found several pages and some users spamming the wiki as you can >>> see in [1] >>> >>> [1] >>> http://wiki.osgeo.org/index.php?title=Special%3ASearch&ns2=1&search=cialis&fulltext=Advanced+search >>> >>> >>> Greetings >>> >>> >>> >>> >> >> Thanks for the notice, I removed the pages. >> >> If you are interested in busting this kind of page yourself you are >> invited to take on the burdens of the sysop role [1]. This list of >> people can delete pages. >> >> I just checked the user list [2] and deleted a dozen more cialis bust >> enhancers. If I would gobble all that stuff my bodily dimensions would >> have grown beyond any imaginable bra sizes... >> >> Anybody aware of a way to delete the users themselves (now they only >> show up as not-yet-edited pages)? >> >> Best regards, >> Arnulf. >> >> [1] http://wiki.osgeo.org/index.php?title=Special:ListUsers&group=sysop >> [2] http://wiki.osgeo.org/wiki/Special:ListUsers >> >> >> > > ___ > Discuss mailing list > Discuss@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/discuss - -- Arnulf Christl Spatial Systems Architect WhereGroup www.wheregroup.com Meet us at AGIT 2009 from July 8.-10. in Salzburg, Austria - www.agit.at -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkpOI5AACgkQhcSN09gHfZztVQCfaOujjR3onVK2XsI3sNc4CSHb EqoAn3APlO4z5sI3+BswlJxDnVhzWz/2 =txAn -END PGP SIGNATURE- ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
Pedro-Juan Ferrer Matoses schrieb: > ¡Hola Arnulfo! > >> If you are interested in busting this kind of page yourself you are >> invited to take on the burdens of the sysop role [1]. This list of >> people can delete pages. >> >> I just checked the user list [2] and deleted a dozen more cialis bust >> enhancers. If I would gobble all that stuff my bodily dimensions would >> have grown beyond any imaginable bra sizes... > > Nowadays I'm following the wiki changes via RSS so usually I notice > this kind of pages, may be "tomorrow" I won't attend the RSS so much, > but in the meanwhile I can do some "dirty job" for the Comunity, if > you give me "the power"... mhuahahaahahahaha > > And Arnulf, I'm not really interested about your "bodily dimensions", > for sure mate, "ni de coña" ;-D > > Bests, > Done, thanks for helping out! http://wiki.osgeo.org/wiki/Special:Log/rights -- Arnulf Christl OSGeo President http://www.osgeo.org ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
Deleting or banning the users won't stop them. What you need to do is look at where these people are coming from (IPs) and ban those directly. Cheers, René Arnulf Christl (OSGeo) a écrit : Pedro-Juan Ferrer Matoses schrieb: I've found several pages and some users spamming the wiki as you can see in [1] [1] http://wiki.osgeo.org/index.php?title=Special%3ASearch&ns2=1&search=cialis&fulltext=Advanced+search Greetings Thanks for the notice, I removed the pages. If you are interested in busting this kind of page yourself you are invited to take on the burdens of the sysop role [1]. This list of people can delete pages. I just checked the user list [2] and deleted a dozen more cialis bust enhancers. If I would gobble all that stuff my bodily dimensions would have grown beyond any imaginable bra sizes... Anybody aware of a way to delete the users themselves (now they only show up as not-yet-edited pages)? Best regards, Arnulf. [1] http://wiki.osgeo.org/index.php?title=Special:ListUsers&group=sysop [2] http://wiki.osgeo.org/wiki/Special:ListUsers ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
¡Hola Arnulfo! > If you are interested in busting this kind of page yourself you are > invited to take on the burdens of the sysop role [1]. This list of > people can delete pages. > > I just checked the user list [2] and deleted a dozen more cialis bust > enhancers. If I would gobble all that stuff my bodily dimensions would > have grown beyond any imaginable bra sizes... Nowadays I'm following the wiki changes via RSS so usually I notice this kind of pages, may be "tomorrow" I won't attend the RSS so much, but in the meanwhile I can do some "dirty job" for the Comunity, if you give me "the power"... mhuahahaahahahaha And Arnulf, I'm not really interested about your "bodily dimensions", for sure mate, "ni de coña" ;-D Bests, -- Pedro-Juan Ferrer Matoses Ingeniero en Geodesia y Cartografía Valencia (España) ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
Re: [OSGeo-Discuss] Some cialis spam in the wiki...
Pedro-Juan Ferrer Matoses schrieb: > I've found several pages and some users spamming the wiki as you can see in > [1] > > [1] > http://wiki.osgeo.org/index.php?title=Special%3ASearch&ns2=1&search=cialis&fulltext=Advanced+search > > Greetings > > > Thanks for the notice, I removed the pages. If you are interested in busting this kind of page yourself you are invited to take on the burdens of the sysop role [1]. This list of people can delete pages. I just checked the user list [2] and deleted a dozen more cialis bust enhancers. If I would gobble all that stuff my bodily dimensions would have grown beyond any imaginable bra sizes... Anybody aware of a way to delete the users themselves (now they only show up as not-yet-edited pages)? Best regards, Arnulf. [1] http://wiki.osgeo.org/index.php?title=Special:ListUsers&group=sysop [2] http://wiki.osgeo.org/wiki/Special:ListUsers -- Arnulf Christl OSGeo President http://www.osgeo.org ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
[OSGeo-Discuss] Some cialis spam in the wiki...
I've found several pages and some users spamming the wiki as you can see in [1] [1] http://wiki.osgeo.org/index.php?title=Special%3ASearch&ns2=1&search=cialis&fulltext=Advanced+search Greetings -- Pedro-Juan Ferrer Matoses Ingeniero en Geodesia y Cartografía Valencia (España) ___ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss
