In the Listivo Thame, You can use reCaptcha v3 - the newest version released by Google. 

reCAPTCHA v3 is Customer-friendly. Allows you to verify if an interaction is legitimate without any user interaction. It is a pure JavaScript API returning a score, giving you the ability to take action in the context of your site: for instance, requiring additional factors of authentication, sending a post to moderation, or throttling bots that may be scraping content.

reCAPTCHA uses an advanced risk analysis engine and adaptive challenges to keep malicious software from engaging in abusive activities on your website. Meanwhile, legitimate users will be able to log in, make purchases, view pages, or create accounts, and fake users will be blocked.

You can enable the Google reCAPTCHA in the Listivo Panel. 

The Listivo Theme uses the Contact Form 7 plugin. This plugin has its own reCaptcha. Just like the Listivo Theme, it uses reCAPTCHA v3. To enable it, move to the WordPress admin screen and open the Contact > Integration menu page on your website. You will see a box titled reCAPTCHA there. Click Setup Integration in the box.

It will display input fields Site Key and Secret Key. Copy-paste the two keys you received from Google into the fields, and click Save Changes.

That’s it. Your Website uses reCAPTCHA’s score to verify whether the form submission is from a human or a spam bot.