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Login Gatekeeper adds an extra layer of security to your WordPress login page by requiring a custom key and value in the login URL (e.g. <code>/wp-login.php?secret=myvalue</code>). You can restrict which user roles require the key, helping to prevent brute force and bot login attempts.
Stealth Protection: 
The plugin does not modify the appearance or behavior of the default WordPress login page. Anyone accessing the login page without the correct secret and value will see the standard WordPress error message, even if they enter the correct username and password. This means attackers cannot detect that extra protection is in place.
Easily configure your login key, value, and restricted roles from the WordPress admin settings page. The plugin also includes a risk confirmation step to prevent accidental lockout.
Lost your secret or value? 
If you forget your login key or value, you can use the default WordPress “Lost your password?” feature. The secret key and value will be included in the password reset email, allowing you to regain access without needing to disable the plugin.
Features:
<ul>
<li>Require a custom key/value in the login URL</li>
<li>Restrict login by user role</li>
<li>Easy-to-use settings page</li>
<li>Prevents brute force and bot login attempts</li>
<li>No visible changes to the login page for added stealth</li>
<li>Secret and value included in password reset email if forgotten</li>
</ul>
Check Out Our Other Plugins
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<li><a href="https://wordpress.org/plugins/flip-cards-module-divi/" rel="ugc">Divi Flip Cards Module</a></li>
<li><a href="https://wordpress.org/plugins/image-carousel-divi/" rel="ugc">Divi Image Carousel</a></li>
<li><a href="https://wordpress.org/plugins/breadcrumbs-divi-module/" rel="ugc">Divi Breadcrumbs Module</a></li>
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Login Gatekeeper

Protect your login page by requiring a secret key and value in the login URL.

Silkalns

WP Chill

Cristian Raiber

A very useful plugin for everyone using WordPress. Adds reCaptcha security to the WordPress login form, register form and comment form. This plugin could help your blog get rid of a lot of spam comments or brute-force attacks.
Nothing gets passed it if the reCaptcha doesn’t validate.
A few notes about the plugin:
<ul>
<li>Supports audio or image captcha types</li>
<li>Can generate the reCaptcha image / audio type in a number of predefined languages</li>
<li>Adds reCaptcha protection to the WordPress login form</li>
<li>Adds reCaptcha protection to the WordPress register form</li>
<li>Adds reCaptcha protection to the WordPress comment form</li>
<li>Adds reCaptcha protection to the WordPress recover password form</li>
</ul>

Uber reCaptcha

This plugin adds the reCaptcha form to the WordPress login form, recover password form, register form and comment form.

Login Gatekeeper vs Uber reCaptcha