Do you want to hide the author URL in your WordPress site? By default, WordPress creates author archive pages and links to them using a URL. While useful in some cases, these URLs can expose usernames and create potential security risks.
With the Nexter Extension (Free) and Nexter Extension (Pro) plugins, you can easily hide the author URL in your WordPress site.
How to Hide Author URL with the Nexter Extension Pro?
To hide author URLs with the Nexter Extension Pro plugin, from the WordPress Dashboard, go to Nexter Extension > Security.
Then go to the Advanced Security section and click on the gear icon (⚙).

It will open the Advanced Security popup, then enable the Hide Author URLs for Security toggle, and click the Save button.

Now, in the author URL, instead of the author name, it will show a number. If someone tries to access the URL by typing the author’s name, it will show a 404 error.