On 2014-12-02 22:41, Vladimir Panteleev wrote:
I'm sure you all are as tired of the occasional spam that hits these
lists as I was deleting it. (Mailing list users in particular, I guess,
since we can't delete an email once it was sent out.) Most of the spam
was coming in through the forum, so I suppose I was responsible for
[not] keeping it out.
Although forum.dlang.org has had a spam check and used reCAPTCHA since
it was announced, it is only somewhat effective against fully-automated
bots - it is powerless against humans paid to post spamverts on forums
web-wide, which is what the current spam economy seems to be gravitating
towards.
Enter DCaptcha, a question-answer challenge tailored for D programmers.
Its goals are to challenge posters of suspicious-looking content with
questions that should be easy to answer to D programmers, and impossible
for non-technical people with no incentive to learn or research stuff
(i.e. spammers). DCaptcha is already in use on the D wiki
(wiki.dlang.org), with great success - DCaptcha's debut cut the
short-lived explosion in wiki spam to zero.
For an idea of what sort of questions DCaptcha asks, you can demo it on
the following page, so you don't have to clutter the forum with test posts:
http://wiki.dlang.org/extensions/DCaptcha/demo.php
The "anonymous class" feature question, I was a bit stunned at first,
before I saw what it actually was.
--
/Jacob Carlborg
