We are all familiar with CAPTCHA — acronym for “Completely Automated Public Turing test to tell Computers and Humans Apart”. A CAPTCHA test is designed to determine if an online user is really a human and not a bot. Through Captcha, the user is asked to perform a certain task, such as enter the text written in the image or click on the images from a set of different images that match the required criteria. CAPTCHA helps protect you from spam and password decryption by asking you to complete a simple test that proves you are human and not a computer trying to break into a password protected account.
