A CAPTCHA is a program that can tell whether its user is a human or a computer. Computer programs can be bots that surf your site looking for information to use for malicious purposes. This type of phishing can capture email addresses on your contact forms and then begin spamming you endlessly. Or hackers can attempt to use your email for the spamming purposes.
Captcha creates a generating and grading test that humans can pass but current computer programs cannot.
You can acquire a free, secure and accessible CAPTCHA from the reCAPTCHA project. This is a Google project and it can be used for WordPress, MediaWiki, PHP, ASP.NET, Perl, Python, Java, and many other environments.
They’re becoming very popular because they are affective in dealing with the phishing problems. And for the most part, they’re pretty easy to set up and use. You’ve probably seen these tests when you’ve filled out a request form or tried to email someone through a contact form. For example, humans can read distorted text as the one shown below, but current computer programs can’t. Continue reading