Steganography is data hiding technique in internet. Here we send CAPTCHA codes within a
cover image using image steganography. CAPTCHA are the crazy codes. They are used in …

Steganography is a data hiding technique, which is generally used to hide the data within a
file to avoid detection. It is used in the police department, detective investigation, and …

Authentication is indeed at the heart of any secure system. CAPTCHAs, a class of HIPs tests,
are a program that tells whether user is a human or a computer. CAPTCHAs currently in use …

A CAPTCHA is a program that can tell whether its user is a human or a computer.
CAPTCHAs are used by many websites to differentiate between the bots (automated …

Today several daily activities such as communication, education, E-commerce,
Entertainment and tasks are carried out by using the internet. To perform such web activities …

ABSTRACT CAPTCHA stand for “Completely Automated Public Turing test to tell Computers
and Humans Apart”. It is a technique of testing where only human can solve it and computer …

In last decades different techniques have been created for hiding information. The role of
hiding information is to create a secure communication between authorize parties in terms of …

CAPTCHA is broadly used for to make system secure. Its aim is to avoid robotic form
submission or prove customer individuality. A pattern matching algorithm is useful to user for …

CAPTCHA. The web survival in this cut-throat competition is impossible without the
mechanisms for blocking spam-boats. The spam-boats have now been made intelligent …

Steganography is a science that focuses on hiding specific messages using specialized
techniques in such a way as only the sender and the intended receiver are able to disclose …