Re: Defeating CAPTCHA

[Chris Shiflett <shiflett () php net>]

Mark Burnett wrote:
> Many ideas I hear for CAPTCHA's rely solely upon the secrecy of the
> data set.

Many ideas about authentication rely upon the secrecy of the passwords. 
Many forms of encryption rely upon the secrecy of the key.

> And that is security that relies upon obscurity.

Is it?

Chris