CAPTCHA used in government sites to protect multiple request attacks
Q. Many government websites use CAPTCHA. What is it used for?- Published on 19 Jan 16a. Prevent hacking of website
b. Distinguish between Humans and computers
c. Delay the user so that queuing of requests becomes easier
d. Determining the users IP address and track its location.
ANSWER: Distinguish between Humans and computers
CAPTCHA is an acronym for Completely Automated Public Turing test to tell Computers and Humans Apart. It’s a rapidly growing challenge-response Turing Test that is very much renowned and is adopted in the security purpose of the websites as well as users. It helps to detect whether an entity is human or not. Turing tests are used for this purpose. CAPTCHA is a form of a Turing test. CAPTCHA Tells Humans and Computers Apart Automatically. A CAPTCHA is a program that protects websites against attacks done by generating multiple automatic requests using scripting technology or other computer program. In general, a CAPTCHA is used to prevent abuse by automated scripts.
