Automattic

Donncha O Caoimh (a11n)

This plugin adds a stylesheet or image to your blog’s html source code. When a browser loads that stylesheet or image a cookie is dropped. If that user then leaves a comment the cookie is checked. If it doesn’t exist the comment is marked as spam. 
The plugin can also check how long it took a user to enter a comment. If it’s too fast it’s probably a spam bot. How fast can a legitimate user enter their name, email, web address and enter a well thought out comment?
For the adventurous, add these lines to your .htaccess and it will block spam attempts before they ever get to WordPress. Replace the Xs with the cookie that was set in your browser after viewing your blog. You can also find the cookie value by examining the page source code and looking for “css.php?k=XXXXXXXXXXXXXXXXXXX”. Make sure the lines go above the standard WordPress rules.
<pre><code> RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
 RewriteRule ^wp-comments-post.php - [F,L]
</code></pre>
If you use WordPress MU, replace wp-comments-post.php above with wp-signup.php to block spam signups.
<pre><code> RewriteCond %{HTTP_COOKIE} !^.*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.*$
 RewriteRule ^wp-signup.php - [F,L]
</code></pre>

Cookies for Comments

If you don't use any other spam filter plugins, then you can rely on this to stop spam comments for sure!

Must have, if you don't use any other spam filters!

I'd been getting a dozen spams a day on two of my sites. We installed "Stop Spam Comments" on one and "Cookies for Comments" on the other. Both worked perfectly. No more spam. Thanks!



very easy and no more spam!

Sets a cookie on a random URL that is then checked when a comment is posted. If the cookie is missing the comment is marked as spam.

Axeptio

Axeptio is a deeply customizable Consent Banner that makes your site compliant with GDPR, TCF v2.2, Google Consent Mode v2, and more —while providing users with a branded and premium cookie consent experience
Axeptio is a powerful Consent Management Platform (CMP) that keeps your website compliant with global privacy laws. From GDPR, ePrivacy, and TCF v2.2 in Europe, to Google Consent Mode v2, PIPEDA and Law 25 in Canada, the CCPA in the U.S. and even more.
<a href="https://www.axept.io/" rel="nofollow ugc">Axeptio</a> ensures your business meets every standard. By managing cookie consent in a clear and customizable way, it helps you build trust while staying fully compliant. Join 80.000 websites that trust Axeptio worldwide. 4.5/5 TrustPilot score.
<h3><a href="https://www.axept.io" rel="nofollow ugc">★ Visit Axeptio ★</a></h3>
<h3>Key Features</h3>
<a href="https://www.axept.io/shake-cookie-checker" rel="nofollow ugc">Instant Setup with Cookie Scanner</a>
Automatically scan your site and generate a ready-to-use consent banner, complete with detected cookies and pre-configured design.
<a href="https://www.axept.io/cookie-banner" rel="nofollow ugc">100% Customizable to Your Brand</a>
Make the banner truly yours: 
– Edit all texts to fit your tone of voice 
– Adjust colors, themes, and layouts 
– Add illustrations, logos, or Axeptio’s cookie visuals 
– Embed images or videos for a more engaging experience
Track and Understand Consent Behavior 
Gain full visibility with a real-time dashboard and connect with your analytics stack, including GA4, Matomo, Piano, and more.
Optimization Tools That Drive Results
Boost performance with advanced controls: A/B testing, consent walls, and fine-tuned timing or shadow effects.
<a href="https://www.axept.io/cookie-banner" rel="nofollow ugc">Efficiency by Design</a>
<ul>
<li>Mobile ready and responsive across devices</li>
<li>1,500+ vendors pre-integrated with logos, icons, and policy links</li>
<li>Lightweight CMP optimized for Core Web Vitals and SEO performance</li>
<li>Audit-ready with instant consent logs and a clear compliance trail</li>
</ul>
Autotranslation
<ul>
<li>Automatically detect the visitor’s browser language and IP, then show the banner in their preferred language (with support for 30+ languages).</li>
</ul>
Axeptio is free up to 200 unique visitors / month. Scan your website now on <a href="http://www.axept.io/shake-cookie-checker" rel="nofollow ugc">www.axept.io/shake-cookie-checker</a>
How to install Axeptio wordpress plugin
<h3>Tutorial Video</h3>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/bB8PjlhLxso?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Configuration happens in the WordPress admin part where you can input your client ID and link your website to your Axeptio account 
User consent and customization happens on our website directly 
Available in several languages
NOTE: JUST INSTALLING THIS PLUG-IN DOES NOT MAKE YOUR SITE GDPR COMPLIANT. EACH WEBSITE USES DIFFERENT COOKIES, YOU MUST ENSURE THAT THE REQUIRED CONFIGURATION IS IN PLACE. 
Please follow our documentation to configure and test your settings for Axeptio and WordPress.
<h3>Documentation</h3>
Read all <a href="https://support.axeptio.eu/en" rel="nofollow ugc">our documentation</a>
<h3>Why Choose Axeptio for WordPress?</h3>
Axeptio is not just a plugin, it’s a complete solution that respects and strengthens your users’ trust. Whether you’re a blogger, an e-commerce site, or a business, Axeptio is the ideal choice for privacy management that’s simple, effective, and compliant with current standards.

Axeptio – Cookie Banner – GDPR Consent & Compliance with a friendly touch

Axeptio | GDPR Cookie Banner - An Immersive Compliance Experience

Cookies for Comments vs Axeptio – Cookie Banner – GDPR Consent & Compliance with a friendly touch