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CAPTCHA stands for “Completely Automated Public Turing test to tell Computers and Humans apart’. In human words, CAPTCHAs can be broken down to whether the user is a spam bot or a real person. By adding a reCAPTCHA, you can block automated software while allowing your users to enter with ease. ReCAPTHCAs are more advanced set compared to a typical CAPTcha test. They can be integrated easily into WordPress security.