Re: [PHP] ASCII Captcha

On Fri, 2008-08-29 at 23:39 -0400, Eric Gorr wrote:
On Aug 29, 2008, at 11:31 PM, Robert Cummings wrote:

On Fri, 2008-08-29 at 23:24 -0400, Eric Gorr wrote:
On Aug 29, 2008, at 11:16 PM, Robert Cummings wrote:

On Fri, 2008-08-29 at 23:05 -0400, Eric Gorr wrote:
On Aug 29, 2008, at 9:40 PM, Robert Cummings wrote:

All CAPTCHA's are not easily crackable. Some are quite difficult.

All someone has to do is hire someone to sit there and solve the
captcha's. There are places in this world which, unfortunately,
employ
slave or virtually slave labor. If someone wants to fire that
missile,
it is certainly possible.

They are _all_ easily crackable.

A human tending to a CAPTCHA is not cracked, the human is performing
the
action for which the CAPTCHA was intended. While CAPTCHA's may be weak
to this kind of exploitation, this exploitation does not constitute a
crack.

Remember, the purpose of a captcha is to prevent a spammer from
performing some kind of action. Anything that would allow the spammer
to perform that action is cracking that thing which was put into place
to prevent it.

No, circumvention is not necessarily cracking. You have described the
"relay attack". See wikipedia section called "Human Solvers":

http://en.wikipedia.org/wiki/Captcha

Cheers,
Rob.
--
http://www.interjinn.com
Application and Templating Framework for PHP

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