The CAPTCHA has become an important issue in multimedia security. Aimed at a commonly
used text‐based CAPTCHA, this paper outlines some typical methods and summarizes the …

Internet services heavily rely on CAPTCHAs for determining whether or not a user is a
human being. The recent advances in ML and AI make the efficacy of CAPTCHAs in …

Websites can improve their security and protect against harmful Internet attacks by
incorporating CAPTCHA verification, which assists in distinguishing between human users …

Websites can increase their security and prevent harmful Internet attacks by providing
CAPTCHA verification for determining whether end-user is a human or a robot. Text-based …

We are in the midst of a revolution, digital revolution which is primarily responsible for the
advancements in various computing fields. There is a greater need for smart devices …

The security of web applications is protected by firewalls, intrusion detection systems or
deep learning-based approaches. Although existing systems perform rules and content …

With the rapid development of information technology, text recognition in natural scenes has
become a hot topic of current research. In order to accurately and quickly identify the box …

Individuals and PCs (personal computers) can be recognized using CAPTCHAs
(Completely Automated Public Turing test to distinguish Computers and Humans) which are …

An approach using convolution neural network (CNN) to recognize Chinese Character
Captcha captured from Tencent Security Center is proposed. 3500 commonly used Chinese …

Humans Apart (CAPTCHA) technique has been an interesting topic for several years. An
Arabic CAPTCHA has recently been proposed to serve Arab users. Since there have been …