New CAPTCHA systems "reCAPTCHA" has been implemented in Parallels Web Presence Builder since version 11.5:
---8<--- [*] The Contact Form module now uses the protection from automated spam postings based on reCAPTCHA, which is one of the best CAPTCHA systems on the market. Site owners can switch it on and off in the module settings. --->8---
How can I add it to my site?
The "reCAPTCHA" system is shown on the "Contact Form" page - it appears when customer start composing a message in the form: