Luigi Cavalieri

RedBrick is able to block most of the automated spam comments a WordPress blog receives daily.
It is based upon a score system that ensures spam comments are blocked as soon as possible, so as to minimise the number of checks each comment must go through. When in doubt, RedBrick always holds the comment in the moderation queue. Comments identified as spam, however, never reach the database.
As a last resource in discerning the kind of comment under examination, RedBrick takes account also of the comment author’s history.
The plugin is designed to work on low-to-medium traffic blogs.

RedBrick

Simple anti-spam plugin for WordPress blogs.

CloudFilt

Prevent and block bot traffic, web scraping, Tor traffic, spam submissions (comments and contact forms), online fraud, business logic abuse, and denial-of-service (DDoS) attacks. 
This plugin inserts the CloudFilt tracking and security codes into your website, enabling the protection services available at https://cloudfilt.com/ 
You can read the full documentation at: https://docs.cloudfilt.com/
Terms and Conditions: https://cloudfilt.com/docs/pt_cloudfilt_07302025.pdf
Tags: web security, bot blocking, web application firewall, antispam, stop bad bots
<h3>Features</h3>
<ul>
<li>
Authentification form
<ul>
<li>Using your public and private key to connect your WordPress website to your CloudFilt account and enable CloudFilt features.</li>
<li>Check if your website is still connected to your CloudFilt account.</li>
</ul>
</li>
<li>
Enabled CloudFilt features
<ul>
<li>Prevents and stop bots traffic, Web Scraping, Tor traffic, Spam Submissions, Web Fraud, Business logic and Denial of service (DDoS).</li>
<li>Injects JS into pages to track and detect potentially dangerous users.</li>
</ul>
</li>
</ul>
<h3>Demo</h3>
<ol>
<li>Login to your CloudFilt account and go to https://app.cloudfilt.com/websites.</li>
<li>Select the website and go to Settings > Integration & Plugins.</li>
<li>In the “WordPress” tab, retrieve the public key and the private key.</li>
<li>Login to the administration page of your WordPress and select the “CloudFilt” plugin from the menu.</li>
<li>In the form, paste the keys you retrieved from your CloudFilt account.</li>
<li>Once it is done, you can go back to https://app.cloudfilt.com and access to your website’s security statistics. Bots can’t be anymore go on your website and users are tracked.</li>
</ol>
To learn more, see the screenshots section.

CloudFilt Bot & Spam Protection

Prevent and stop bots traffic. This plugin inserts in your website the CloudFilt codes for the security tracking available on https://cloudfilt.com/.

RedBrick vs CloudFilt Bot & Spam Protection