Questy captcha is awesome but don't forget to change the questions from time to time. Maybe you'll also find this article interesting, I wrote it when there was much spam on semanticweb.org: http://semanticweb.org/wiki/semanticweb.org:Fighting_spam ----- Yury Katkov
On Wed, Aug 1, 2012 at 10:28 PM, Anne Wilson <an...@kde.org> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > - -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 01/08/12 11:36, Scheid, Bernhard wrote: > > Hi, > > > > I am running a couple of relatively small academic Wikis mainly for > > educational uses at university. Thus there is relatively little > > traffic apart from course time. Nevertheless, some two years ago I > > noticed more and more spam and thus reduced editing rights first to > > registered users, then to users of a special group that need my > > personal acknowledgement. Now, in recent months there is an > > increasing number of new users (robots?) obviously attempting to > > write spam which they do not do but they are kind of spamming the > > lists of registered users. I could reduce the registration rights > > but on the other hand I want students to register freely in order > > to obtain their editing permissions. Is there a decent way to > > detect and prevent harmful would-be spammers from setting up an > > account without preventing that option for serious users? > > > Determined human spammers are hard to beat, but fortunately not great > in numbers. Questy captcha is wonderful at shutting out the bots. > You can expect a massive reduction as soon as you have set your > questions. You just set questions that are simple to answer, often > based on what is on-screen at the time of registration. Bots can't > handle that. > > Anne > - -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.12 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAlAZB30ACgkQj93fyh4cnBexKwCfSQqkMeiyysMT177si4NzezEm > ryAAnA/rz5jCetvqHT7QVluS6mekd2Tl > =iCTi > - -----END PGP SIGNATURE----- > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.12 (GNU/Linux) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAlAZdVIACgkQj93fyh4cnBe9tACbB6BAN2d1UnluRP6zByTgt0ry > JjQAn1m9M1x06kbKpPhyK/IjX6oezI2l > =uZdF > -----END PGP SIGNATURE----- > > _______________________________________________ > MediaWiki-l mailing list > MediaWiki-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/mediawiki-l > _______________________________________________ MediaWiki-l mailing list MediaWiki-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
