luis

This plugin can block “Tor access”, “Proxy Access”, “Commandline Access” and more. 
When it blocks unauthorized access, you can choose setting “Show message” or “Redirect”.
Googlebot,Twitterbot and other crawler can access own wordpress.
<ul>
<li>If you using cache plugin or cache system, this plugin doesn’t run properly. *</li>
</ul>
<h4>list of exception.</h4>
“google”,”msn”,”yahoo”,”bing”,”hatena”, 
“data-hotel”,”twttr.com”,”eset.com”,”linkedin.com”, 
“ahrefs.com”,”webmeup.com”,”grapeshot.co.uk”,”blogmura.com”, 
“apple.com”,”microad.jp”,”linode.com”,”shadowserver.org”,”ezweb.ne.jp”
You can add exceptions IP or UserAgent. 
See more “Secreenshot”.

block-wpscan

This plugin can block "Tor access", "Proxy Access", "Commandline Access" and more. When it blocks unauthorized access.

Carlos

In many WordPress installations is possible enumerate usernames through the author archives, using urls like this:
http://wpsite/?author=1
http://wpsite/?author=1/
http://wpsite/?bypass=1&author%00=1
http://wpsite/?author%00=%001
http://wpsite/?%61uthor=1
And recently wordpress since 4.7 comes with a rest api integrated that allow list users:
curl -s http://wpsite/wp-json/wp/v2/users/ 
curl -s http://wpsite/?rest_route=/wp/v2/users 
curl http://wpsite/?_method=GET -d rest_route=/wp/v2/users
Know the username of a administrator is the half battle, now an attacker only need guest the password. 
This plugin stop it.
Also, is possible get usernames from the post entries. 
This plugin, hide the name of the author in a post entry if he is not using a nickname. 
Also, hide the url page link of an administrator author.
The main goal is hide the administrators usernames. 
Obviously, is better not choose “admin” as the username because is easiliy guessable.

block-wpscan vs No User Enumeration