Are captchas effective

Compaq / Dc5000
January 23, 2009 at 02:02:43
Specs: WinXP , P4 3.0
at stopping the spamming of email forms? I know that captchas 'can' be defeated, but is this common? Do captchas stop spam?


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February 1, 2009 at 03:31:52
Yes, they stop automated account creation and spamming.

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February 2, 2009 at 11:08:43
But they can be defeated. But that doesn't mean they are no good. Locks can be picked but it doesn't stop people from using them.

It's another hurdle for a spammer to overcome. Put enough hurdles in his way and hell trip over one sooner or later.


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March 16, 2009 at 14:12:30
Hi, a CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) can be quite effective in thwarting unwanted computer-generated spam responses to your form. It is not completely full-proof as it will not stop unwanted human-generated spam responses to your form. Also, depending on the level of sophistication and how securely you implement it, some CAPTCHA can be circumvented.

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