reCaptcha is a free service from Google that helps protect websites from spam and abuse. It is easy for humans to solve, but hard for “bots” and other malicious software to figure out. By adding reCaptcha to a site, you can block automated software while helping your welcome users to enter with ease.
You use Google reCaptcha by creating a set of keys private to your website and installing them within your website.
On WordPress websites, amongst other uses, we typically reCaptcha on Contact Form 7 to prevent spam form submissions and within WordFence to prevent brute force login attempts.
