This plugin stops bad bots from attacking your forms using hCaptcha or simple maths questions
hCaptcha is a drop-in replacement for Google’s reCAPTCHA, but with the added benefit of getting paid for challenges completed.
“Private. Secure. Faster. And we pay you to use it.”
Please note, you will need a free hCaptcha account for this plugin to work in hCaptcha mode, but the simple maths questions mode works locally with no account required.
This plugin is available for download for your site.