Re: reCaptcha implementation, done!
So Henry Hughes wrote, at 2:21 AM on 6/8/07:
I like that solution in theory, it could easily be made multilingual, but taking a look through the code I'm not so sure how secure it is it seems to ask only 1 of 2 simple questions?
if ($select == 'w'){ AskWeekday(); $label = 'Which day comes after ' $SESSION['QA'] ' ?'; } else if ($select == 'h'){ askhighnumber(); $label = 'Which number is the higest ' $SESSION['QA'] ' or ' $SESSION['QB'] ' ?'; }
Even I could write a script to get past that its probably enough to suit an email form with a fixed recipient, but not for protecting something that can publicly send email and display posts
H
Yes, of course it's easy to write a script to get past this particular captcha implementation, but the point is that no spambot is likely to be able to do so unless it was designed for this specific implementaion See the discussion at http://www vbulletin org/forum/showthread php?t=124828 which describes a similar text-based captcha to be used with vBulletin boards
BTW, I've employed an even simpler capctha, which asks the user only to type the number seven in lower case letters, on a website guest book for over a year without a single spambot incursion -- before it was installed the guest book had started to receive several every day
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