Enhancing Web-Security with Stronger Captchas
Dilip Kumar Kushwaha, Kasarla Priyanka, Harleen Kaur · International Journal of Computer Applications Technology and Research · 2013
Captcha are used widely over the World Wide Web to prevent automated programs in order to scrape a data from websites.Captcha is a challenge response test used to ensure that the response is generated by a person not by a computer.Users are asked to read and type a string of distorted characters in order to ensure that the user is human or not.Automation is real problem for web application.Automated attacks can exploit many services:1. Blogs 2. Forums 3. Phishing 4. Theft of data Registration Websites use CAPTCHA (completely automated public turing test to tell computers and human apart) systems to prevent the bot programs from wasting their resources.Today is the Era of where technologies are changes very rapidly.So spammers are hackers are also trying something new to cracking captcha.That's why it is necessary to developing an advanced technology to generating a captcha.Just like simply generating a Captcha Images from text, or rotating an object within images.