Ayesh Karunaratne

This plugin ensures that when users of your website (including site administrators), the browsers are instructed to clear all residue such as cookies and caches to enhance the security.
<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Clear-Site-Data" rel="nofollow ugc"><code>Clear-Site-Data</code> HTTP header</a> is sent when a user logs out, which supported browsers will react by removing all existing cookies, cache, and other storage. It will not remove saved passwords, permissions, adblocker rules, and other data that are supposed to be permanent.
This plugin prevents possible security vulnerabilities such as clicking the “Back” button in the browser after logging out revealing the pages that should not have been accessible after logging out. Furthermore, this cleans the browser cache, which prevents accessing authenticated media assets (such as purchased images) from the browser cache of a victim.

Clear Logout

A tiny WordPress plugin to clear all browser data related to the site upon logout (With Clear-Site-Data header).

prontotools

zkancs

Use a simple, single shortcode to allow your visitors to login or logout depending on their current status.
The shortcode outputs an a href link for you to add in the header, footer or anywhere else on your website.
Example Shortcode:
<pre><code>[login-logout text_to_login="Login" text_to_logout="Logout" class="custom-class" redirect="/shop/"]
</code></pre>
Available Parameters:
<ul>
<li>text_to_login – The text to prompt logged-out users to log in.</li>
<li>text_to_logout – The text to prompt logged-in users to log out.</li>
<li>class – Any optional custom classes to be added to the link.</li>
<li>redirect – An optional page to redirect to after logging in/out. If not included, users will redirect to whatever page they’re on when they click the link.</li>
<li>login_url – An optional parameter that user can change the URL login page</li>
</ul>

Login Logout Shortcode

A single shortcode you can place anywhere to allow visitors to login/logout.

Clear Logout vs Login Logout Shortcode