Question: are we talking captcha or REcaptcha? My understanding is that REcaptcha is better than old school captcha
Have we evaluated it as an option? http://www.google.com/recaptcha/intro/index.html On Saturday, April 16, 2016, Ben Gamari <[email protected]> wrote: > Niklas Hambüchen <[email protected] <javascript:;>> writes: > > > Hi Ben, > > > > Could we not have a captcha instead of a reject, to avoid false > > positives? That would require no training. > > > > Since I assume most Trac spammers are extremely unsophisticated, a > > simple hardcoded question like "What programming language is GC all > > about?" may be sufficient. > > > The CAPTCHAs being broken are the reason why this incident occurred. > I have added some more CAPTCHAs to try to dilute the pool of answers > that they already know, but they still seem to solve them easily > enough regardless. I can only imagine they have some sentient beings > sitting at computers solving CAPTCHAs. > > I don't really feel like we can make the CAPTCHAs themselves any more > difficult without excluding real new users, which I really want to avoid. > > Regardless, my goal here is to error on the side of less filtering, not > more, even if this does mean more manual maintenance. To this end, I've > configured the filters such that the probability of legitimate activity > being suppressed should be negligible, > > * I've been careful to only train the Bayes filter on obvious spam; > I have tested it against various snippets from the wiki and mailing > list and have yet to see it score anything legitimate with a spam > likelihood > 5%. > > * Even if the Bayes filter does deem your content to be spammy enough > to warrant further attention, you will merely be asked to solve a > CAPTCHA. Posts will not be outright rejected unless it is quite clear > that they are spam. > > I am optimistic that the filtering will have negligible effect on > legitimate traffic. As a smoke test I managed to create a new account, > open a new ticket, and start a new Wiki page without even needing to > solve a CAPTCHA. > > Cheers, > > - Ben >
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