Google reCAPTCHA Privacy Policy
“Google reCAPTCHA” (hereinafter “reCAPTCHA”) is implemented on our websites. This service is provided by Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA (“Google”).
We use reCAPCHTA on our websites to prevent various types of data
processing abuse attempts (e.g. phishing). reCHAPTA analyzes various
information of the respective visitor (e.g. IP address, mouse movements of the user, length of stay on the website). By using reCAPTCHA, data is transferred to Google, which is used to determine whether the visitor is a human being or a (spam) bot.

You can read which data is collected by Google and what this data is used for at