Hello @tahamohamadi and thanks for reaching out to us!
Here is a link to our documentation that mentions what Wordfence can help protect against:
https://www.wordfence.com/help/firewall/#what-it-protects-against
You’ll notice SQL Injection, which is unsanitized SQL code that can compromise a database system.
As for Alfa-Shell, as long as you follow our guidelines to stay secure, strong passwords, 2FA, no logins using “admin”, always using certified plugins/themes from the WordPress repository, etc., you should be protected.
Let us know if you need anything else!
Thanks again!