What is reCAPTCHA and how does it work? reCAPTCHA is a human verification mechanism that provides a free anti-spam service. It can be used along with the WP Cerber anti-spam engine. When reCAPTCHA is configured for a form on your website, a couple of JavaScript scripts are loaded from Google’s servers every time the web page with the form is being displayed. If you have enabled a visible version, those scripts will display a reCAPTCHA widget inside the form. With invisible reCAPTCHA, those scripts will display a reCAPTCHA badge at the corner of a browser screen. Every time a user … Continue reading How to limit the number of concurrent user sessions in WordPress