The traditional CAPTCHA consists of warped or overlaying numbers and letters that the user has to enter into a form or box. They function by providing the user with information for interpretation. See More: What Is Social Engineering? Definition, Types, Techniques of Attacks, Impact, and Trends Understanding the meaning of CAPTCHAĬAPTCHA is a security measure that prevents bots from accessing online services. Let us now explore the fundamental principles behind this widely used only security method. It identifies whether a purportedly human operator is a computer program (a bot) or not, as opposed to attempting to establish whether a computer is human. Interestingly, while it’s referred to as a “public Turing test,” a CAPTCHA is truly the inverse of a Turing test. A Turing test is not based on answering questions correctly rather, it is concerned with how “human” the responses seem, irrespective of whether they are accurate. A computer program “passes” the Turing test if its actions throughout the test cannot be distinguished from that of a person, i.e., if it behaves as a human would. In 1950, Alan Turing, an early pioneer of computing and artificial intelligence (AI), created the Turing test. A Turing test evaluates a computer’s capacity to simulate human behavior. The term “Turing test” is central to CAPTCHAs. To combat this, the Completely Automated Public Turing Test to Tell Computers and Humans Apart - commonly abbreviated as CAPTCHA - was created to differentiate between bots and humans. Internet services include free email account creation, online polls, online payments, electronic transfers, and other digital social and commercial activities.įurthermore, these sites are often under assault by bots, which are automated computer programs.
Today, access to the Internet’s vast wealth of information has become necessary for all users.
CAPTCHA is a challenge-response test that acts as an authentication mechanism on websites, search engines, and web applications to ensure that users (with or without password-based credentials) are human beings and not automated bots trying to crowd the system and cause a cyberattack.
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