Wordpress: features to protect user input?

Question

WordPress

What are currently the most reliable features to protect what the user enters, for example during registration. I searched on the Internet and realized that there are a lot of them, and for specific cases of processing inputs in forms, I can’t find them. Please let me know which features to use.

Answer 1

it is better to read about "protection" of data in the official documentation.
in Russian and more details
https://codex.wordpress.org/%D0%92%D0%B0%D0%BB%D0%...