Here is how to redirect 403 to 404 in Apache web server. It will protect your website from malicious attacks & security vulnerabilities.
Apache
How To Redirect Subfolder to Root in Apache
If you move your website from subdirectory to root then you need to redirect subfolder to root. Here is how to redirect subfolder to root in Apache.
How To Block User Agent in Apache
Sometimes you need to block malicious user agents and spam bots from visiting your website. Here are the steps to block user agent in Apache web server.