Hacker's Arena: What is Captcha / why does it need / how to bypass captcha verification

Monday, December 20, 2010

What is Captcha / why does it need / how to bypass captcha verification

There are lot of people who asked me one question many times What is Captcha?. now here i'm going to explain what is captcha? , why does it need? , how to bypass captcha verification?.so lets start with begining:

What is captcha:

The term CAPTCHA was created in 2000 by Luis von Ahn, Manuel Blum, Nicholas J. Hopper of Carnegie Mellon University. Captcha is ,It is an acronym for “Completely Automated Public Turing test to tell Computers and Humans Apart”.

Why does it need:

If you have ever tried to register with a website or comment on a blog and been asked to enter some crazy letters that have been all jumbled up, you know how frustrating it can sometimes be to tell an L from a 1 or a J from an I.
The reason websites have CAPTCHA is spam. Those crazy letters are a way to check if the person registering or trying to comment is a real live human being as opposed to a computer program attempting to spam the site. Yes, it's the same reason most of us have some form of spam blocker on our email

CAPTCHA code was created to stop automated computer spam robots from filling out forms, harvesting email addresses, and then sending out countless spam emails.
The CAPTCHA security image works by asking the website visitor to type in a code they see correctly. A human can do this, but an automated computer program cannot.

So, next time you run up against one of those images and get a little frustrated trying to tell a Q from an O, just remember not to vent your frustration at the website. Focus it on the spammers, because they are the reason we have to squint at our screen almost every time we want to register at a new website.

How to bypass captcha verification:

You can Bypass captcha in many waysThere are various firefox Plugins which can be used for bypass procees.Check this out

1.SkipScreen

skips unnecessary pages on sites like Rapidshare, Megaupload, zShare, Mediafire, and more. Try it out, or watch a demo at skipscreen.com.SkipScreen will be tenaciously maintained and improving all the time. Why click through ad-laden pages and wait for countdowns when your computer can do it for you?

Supported sites:

Rapidshare.com