Captcha
form verification
Online webforms are being targeted by spam
emailers to send more spam.
If you have a form online you need to make sure spam robots cannot
use it. Captcha is used to protect web forms against spammers. The
code stops automated computer spam robots from filling out forms,
harvesting email addresses, and then sending out countless spam
emails. If your form is used by spambots this could lead to your
domain being banned.
Beyonder will implement Captcha on your web form to ensure it
is fully secure and safe to use.
How the Spam is Blocked - People and automated computer
spam robots never see your email address because it is hidden
deep within the "back
end" code
on your website. It is not on the visible webpage being viewed
and it is not in the source code.
Ordering is simple and include the new Companies Act regulation
and save £50 (see below)
From Wikipedia, the free encyclopedia
(Redirected from Captcha)
A CAPTCHA (an acronym for "Completely Automated Public Turing
test to tell Computers and Humans Apart", trademarked by Carnegie
Mellon University) is a type of challenge-response test used in
computing to determine whether or not the user is human. A CAPTCHA
involves one computer (a server) which asks a user to complete
a test. While the computer is able to generate and grade the test,
it is not able to solve the test on its own. Because computers
are unable to solve the CAPTCHA, any user entering a correct solution
is presumed to be human. The term CAPTCHA was coined in 2000 by
Luis von Ahn, Manuel Blum, Nicholas J. Hopper (all of Carnegie
Mellon University), and John Langford (of IBM). A common type of
CAPTCHA requires that the user type the letters of a distorted
image, sometimes with the addition of an obscured sequence of letters
or digits that appears on the screen.
Because the test is administered by a computer, in contrast to
the standard Turing test that is administered by a human, a CAPTCHA
is sometimes described as a reverse Turing test (although this
term is ambiguous because it could also mean a Turing test in which
the participants are both attempting to prove they are the computer).
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