Devi

The plugin Changes wordpress user slug for security reasons, it prevents access to the usernames of registered users on your site.
By using “Simply Change Author URL” The WordPress default users(authors) Slug and URL addresses will be changed automatically.
By Default Author URL is: <code>example.com/author/[username]/</code> 
after install this plugin URLs will be changed to: <code>example.com/user/[user_id]/</code>
This will protects the usernames from being easily accessible by cyber attackers.
This plugin also: 
1. Removes wordpress api user endpoints. (they contain information about users) 
1. Changes canonical links generated by yoast.

Simply Change Author URL

Changes wordpress user slug for security, it prevents access to the usernames of registered users on your site.

Nazmul Ahsan

faisalhossain

This simple plugin changes the user based permalink slug ‘author’ to anything you wish. 
For example, you have an e-learning management system where different members teach on different topics. Each member has his/her unique profile url (author permalink) something like this: http://nazmulahsan.me/author/admin 
Now you wish the word ‘author’ to be changed to ‘teacher’. So, this is the plugin you need.

Rename Author Slug

This simple plugin changes the author based permalink slug 'author' to anything you wish.

Simply Change Author URL vs Rename Author Slug