Google reCAPTCHA Privacy Policy
We use Google reCAPTCHA from Google Inc. (1600 Amphitheater Parkway Mountain View, CA 94043, USA) to prevent spam.

The legal basis for use is Article 6 (1) f (lawfulness of processing), as there is a legitimate interest in protecting this website from bots and spam.

reCAPTCHA is a free service that protects web pages against spam and abuse. It uses advanced risk analysis techniques to keep people and bots apart. With the new API, a significant number of your valid human users will pass the reCAPTCHA challenge without having to solve a CAPTCHA. We use reCAPTCHA to secure forms.

By using reCAPTCHA, data will be transmitted to Google using Google to determine whether the visitor is human or spam. What information Google collects and how it uses this information can be found at https://policies.google.com/privacy?hl=en-DE.
You can read Google's Terms of Service and Products Terms at https://policies.google.com/terms?hl=en-DE.