Security code

Captcha

Written Friday August 24 2007

This site was updated adding the security code (also known as CAPTCHA: "completely automated public Turing test to tell computers and humans apart") to the comments: now if you want to write a comment to a news, you must copy the security code from an image.

This way only real people can write comments to the news, avoiding automated spam and newly allowing us to publish new comments as they arrive and then validating them.

With CAPTCHA, the server asks a user to complete a test that the computer can generate and verify, but is not able solve it. Because computers are unable to solve the CAPTCHA, if the correct solution is presented, we can presume that there was an human on the keyboard. 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). Typically CAPTCHA requires that the user type the letters of a distorted image.

If you want you can have this solution also in your site. Ask CicoNET!

Comments

Italiano Written by alessandro Thursday December 20 2007
ora so chi ha inventato il metodo che vedo in molti siti quando c'è da inviare una email, complimenti

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