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This CAPTCHA (reCAPTCHA v1) of "smwm" obscures its message from computer interpretation by twisting the letters and adding a slight background color gradient.A CAPTCHA (/ ˈ k æ p. tʃ ə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam.
reCAPTCHA Inc.[ 1] is a CAPTCHA system owned by Google. It enables web hosts to distinguish between human and automated access to websites. The original version asked users to decipher hard-to-read text or match images. Version 2 also asked users to decipher text or match images if the analysis of cookies and canvas rendering suggested the page ...
Internet bot. An Internet bot, web robot, robot or simply bot (an abbreviation of robot ), [ 1] is a software application that runs automated tasks ( scripts) on the Internet, usually with the intent to imitate human activity, such as messaging, on a large scale. [ 2] An Internet bot plays the client role in a client–server model whereas the ...
It would work by being able to identify images, possibly by their hash, and a corresponding ASCII answer to it. When a user visits a site using the service, the service checks the page for a CAPTCHA image. If it finds one that is in the database, the form is automatically filled out and submitted seamlessly.
Challenge–response authentication. In computer security, challenge-response authentication is a family of protocols in which one party presents a question ("challenge") and another party must provide a valid answer ("response") to be authenticated. [ 1]
Standard CAPTCHA techniques such as character crowding, once animated, are easier for humans to detect because of an innate motion-detecting ability. Behavior analysis. Using machine-learning algorithms, NuCaptcha monitors platform interactions to tune the security of each CAPTCHA delivered to the user.
Since November 2006, a very destructive forum and wiki spam attack has been propagated by inserting into comments redirect domains with an automated posting script like XRumer. These domains redirect a user to pornographic websites. If a user clicks on the image or attempts to close the Website an ActiveX codec will be downloaded as a Zlob Trojan.
Website. Standards. ECMAScript ( / ˈɛkməskrɪpt /; ES) [ 1] is a standard for scripting languages, including JavaScript, JScript, and ActionScript. It is best known as a JavaScript standard intended to ensure the interoperability of web pages across different web browsers. [ 2] It is standardized by Ecma International in the document ECMA-262 .