fullworks

Alan Fuller

Stop User Enumeration is a security plugin designed to detect and prevent hackers scanning your site for user login names.
User Enumeration is a type of attack where nefarious parties can probe your website to discover your login name. This is often a pre-cursor to brute-force password attacks. Stop User Enumeration helps block this initial attack and allows you to log IPs launching these attacks to block further attacks in the future.
Tools like WPSCAN are designed for use by ethical hackers and make efforts to find user login names. Ethical hackers ask permission first, this plugin is designed to reduce the tools when used without permission and when used in conjunction with fail2ban can block those attempts at the firewall.
If you are on a VPS or dedicated server, as the attack IP is logged, you can use (optional additional configuration) fail2ban to block the attack directly at your server’s firewall, a very powerful solution for VPS owners to stop brute force attacks as well as DDoS attacks.
If you don’t have access to install fail2ban ( e.g. on a Shared Host ) you can still use this plugin.
The plugin can stop the user id being leaked by the oEmbed API call.
Since WordPress 4.5 user data can also be obtained by API calls without logging in, this is a WordPress feature, but if you don’t need it to get user data, this 
plugin will restrict and log that too.
Since WordPress 5.5 sitemaps are generated by core WP ( wp-sitemap.xml ) which includes a user/author sitemap that exposes the user id. You can enable / disable this in the plugin settings.
<h4>PHP 8.4 compatible</h4>
Tested on PHP 8.4
<h4>Features Include</h4>
<ul>
<li>Blocks user enumeration requests by GET or POST</li>
<li>Syslogs a block so Fail2Ban can be used to block an IP</li>
<li>Optionally blocks REST API user requests for non authorized users</li>
<li>Optionally removes author sitemap</li>
<li>Optionally removes author from OEMBED</li>
<li>Optionally removes numbers from comment authors</li>
</ul>
<h3>Privacy</h3>
This plugin includes an optional email feature for plugin news and updates. When enabled:
<ul>
<li>Your email address may be sent to https://fullworksplugins.com for important plugin updates and security notices</li>
<li>This is completely optional and requires your explicit consent via the opt-in form in the plugin settings</li>
<li>No data is collected or transmitted without your permission</li>
<li>You can opt-out at any time from the plugin settings</li>
<li>No other personal data is collected or transmitted to external services</li>
</ul>
The plugin logs attempted user enumeration attacks locally using WordPress’s standard logging system: 
* IP addresses of potential attackers are logged locally for security monitoring 
* These logs remain on your server and are not transmitted to any external service 
* Logs can be used with fail2ban or similar tools for enhanced security
For more information about data handling, please visit https://fullworksplugins.com/privacy-policy/

Stop User Enumeration

Works as a charm!

Helps secure your site against hacking attacks through detecting  User Enumeration

Mark-k

Stops user name enumeration and other type of user name and email leakages.
Specifically does the following: 
1. When the site is configured to use pretty permalinks, the plugin will prevent 
 the automatic redirect of usrl which include user ID, like example.com/?author=1, to 
 something like example.com/author/admin which will leak the existence of a user 
 named admin which can be used in further brute force attacks. 
 (This is also know as “user enumeration”).
<ol>
<li>
With the REST API restrict user name related information (actual user name 
and user posts page URL) to only admin users.
</li>
<li>
Preventing authentication failure notices on the login page to disclose 
the existence of user names/user emails resulting from displaying different 
messages hen the user is incorrect and when the password is incorrect. Just 
display the same failure message for whatever is the failure reason.
</li>
<li>
Preventing the reset password mechanism from disclosing user names/user emails 
resulting from displaying different messages when a user/email for which a reset 
is requested exist in the DB, and when it does not. Just display the same message 
for both.
</li>
</ol>
Even with the plugin active, if your theme displays author information while linking 
to author pages this can be used for user name leakage. In this case you should 
think about totally decoupling user and author information with plugins like 
https://wordpress.org/plugins/authors-as-taxonomy/
Another thing that the plugin do not do is to handle leakage resulting from the use 
of gravatar, as this requires a replacement of gravatar functionality itself and 
it is much harder to exploit than the other leakages.
And last leakage hole not covered right now, but might be covered in the future, 
is leakage of information via the sign in process. We leave it for later as most 
installs do not allow people to sign in.
Read more on the plugins main page https://calmpress.org/wordpress-plugins/prevent-user-name-and-email-leakage/
<h4>Documentation</h4>
<h4>Contribute</h4>
Pull Requests, bug reports and/or enhancement suggestions are welcome at https://github.com/calmPress/Authors-as-taxonomy

Prevent user name and email leakage

Stops user name enumeration and other type of user name and email leakages.

Stop User Enumeration vs Prevent user name and email leakage