Rainer Duffner wrote:
Jeroen Massar schrieb:
Just display the captcha from the signup on $pornsite, a person will fill it in for you, captcha bypassed. If it is interesting and cheap for then to abuse it, they will.
Do you have a current, working example for that? (Just for research purposes, of course) ;-))))
Do you mean the sites where they show those pages or example of the code which does this? For the first, the only site that comes close to it is http://www.ipv6experiment.com, but that won't be employing any captcha's, thus I guess you'll just have to google for your dose of 'biology lessons' to research with. For the latter, http://www.php.net, or whatever language you use for your site.
Roger Schmid wrote:
nice idea, didn't think occur to me :)
It is what defeats captcha's on daily basis. Which is why in a captcha one should always include the name or logo of the site in the image, that way the user might realize that they are being used and at least it will be easy to see which service is being abused by the site.
Greets, Jeroen