In general, image CAPTCHA form containing the letters or numbers tampered with various
types of noise. This test involves the user to type in the result of guesses letters or numbers …

CAPTCHA merupakan suatu tes untuk membedakan pengguna situs web, apakah manusia
atau program komputer. Umumnya, CAPTCHA dijawab dengan cara mengetikkan jawaban …

The basic challenge in designing an obfuscating CAPTCHAs is to make them easy enough
that users are not dissuaded from attempting a solution, yet still too difficult to solve using …

Abstract Hotspot networking SMKMuhammadiyah2Malang do not have a good security
system that can be used by unauthorized users. With the issue of the security system …

CAPTCHA, Completely Automated Public Turning Test to tell Computers and Humans Apart,
it is a one type of test. CAPTCHA is standard internet security they protect online emails and …

In this paper, the CAPTCHA code is recognized based on character segmentation and
random forest algorithm. In the recognition process, the gray conversion method …

Malicious computer programs today have tried to target websites, which have a significant
effect on their availability and security. The CAPTCHA is a tool that is an efficient way of …

In this paper, the CAPTCHA recognition is studied by using neural network algorithm.
Because the traditional BP neural network itself has problems such as uncertain structural …

Completely Automated Public Turing Test to Tell Computers and Human Apart (CAPTCHA)
is designed for simple problems that can be quickly solved by human, but are difficult for …

A CAPTCHA is challenge response test used to ensure that the response is generated by
humans. CAPTCHA test are administrator by machines to differentiate between humans and …