LaughterOnWater

<p><strong>GhostTrap</strong> provides sophisticated invisible spam protection using a comprehensive 5-layer detection system. Legitimate users comment normally while automated spam is silently blocked through advanced timing analysis, cryptographic validation, and behavioral detection.</p>
<h4>5-Layer Protection System</h4>
<ul>
<li><strong>Timing Analysis</strong> – Detects submissions too fast for human interaction</li>
<li><strong>Cryptographic Signatures</strong> – Prevents replay attacks and form manipulation</li>
<li><strong>Year Validation</strong> – JavaScript-enhanced field verification</li>
<li><strong>JavaScript Detection</strong> – Ensures legitimate browser interaction</li>
<li><strong>Honeypot Fields</strong> – Multiple hidden traps catch automated bots</li>
</ul>
<h4>Professional Features</h4>
<ul>
<li><strong>Enhanced Admin Interface</strong> – Professional statistics dashboard with custom branding</li>
<li><strong>Real-time Statistics</strong> – Track protection effectiveness with detailed blocking metrics</li>
<li><strong>Configurable Timing</strong> – Adjust detection sensitivity from 5-300 seconds</li>
<li><strong>WordPress 6.4+ Compatible</strong> – Full support for block themes and FSE</li>
<li><strong>Admin Bar Integration</strong> – Quick spam statistics for administrators</li>
<li><strong>Screen Options Control</strong> – User-configurable interface elements</li>
</ul>
<h4>Zero User Friction</h4>
<p>All protection operates invisibly – no captcha, no puzzles, no delays. Users with JavaScript enabled see normal comment forms, while those with disabled JavaScript get simple year validation. Protection effectiveness remains high in both scenarios.</p>
<h4>Performance Optimized</h4>
<ul>
<li><strong>Lightweight JavaScript</strong> – Only 2KB, loads exclusively on comment pages</li>
<li><strong>Smart Script Loading</strong> – Conditional loading based on comment form presence</li>
<li><strong>Minimal Database Impact</strong> – Efficient storage with optional spam archiving</li>
<li><strong>Browser Compatibility</strong> – Works across all modern browsers with graceful degradation</li>
</ul>
<h4>GDPR Compliant</h4>
<p>No external services, no tracking, no personal data collection beyond standard WordPress comment processing. All spam detection happens locally on your server.</p>
<h4>Attribution</h4>
<p>Built upon the original Anti-spam plugin foundation by webvitaly, with comprehensive modernization, enhanced detection layers, and professional admin interface for current WordPress compatibility.</p>
<h3>Privacy Policy</h3>
<p>GhostTrap operates with privacy-first design principles:</p>
<ul>
<li><strong>No External Services</strong> – All spam detection processing occurs on your server</li>
<li><strong>No Personal Data Collection</strong> – Uses only standard WordPress comment data for protection</li>
<li><strong>No Tracking or Analytics</strong> – Zero data sharing with third parties or external systems</li>
<li><strong>GDPR Fully Compliant</strong> – Minimal data processing with transparent, local-only operation</li>
<li><strong>Optional Spam Storage</strong> – Blocked comments stored locally only if explicitly enabled</li>
</ul>
<h3>Advanced Configuration</h3>
<h4>Timing Threshold Recommendations</h4>
<ul>
<li><strong>High Security Sites:</strong> 10-15 seconds (stricter protection)</li>
<li><strong>General Purpose Sites:</strong> 15-20 seconds (balanced protection)</li>
<li><strong>Accessibility-Focused Sites:</strong> 25-30 seconds (accommodates slower interaction)</li>
<li><strong>Reading-Heavy Sites:</strong> 30+ seconds (allows time for content review)</li>
</ul>
<h4>Admin Interface Customization</h4>
<ul>
<li><strong>Admin Bar Statistics</strong> – Toggle spam counter visibility in admin bar</li>
<li><strong>Screen Options</strong> – Control information panel display on comments page</li>
<li><strong>Dashboard Integration</strong> – Spam statistics in “At a Glance” widget</li>
<li><strong>Contextual Help</strong> – Comprehensive protection information in WordPress help system</li>
</ul>
<h4>Technical Requirements</h4>
<p><strong>Server Environment:</strong><br />
* WordPress 5.0 or higher<br />
* PHP 7.4 or higher<br />
* Standard WordPress hosting with wp_options table access</p>
<p><strong>Browser Support:</strong><br />
* All modern browsers (Chrome, Firefox, Safari, Edge)<br />
* Internet Explorer 11+ with graceful degradation<br />
* Mobile browsers with full functionality<br />
* JavaScript-disabled browsers with fallback protection</p>
<p><strong>Performance Specifications:</strong><br />
* JavaScript payload: ~2KB minified and compressed<br />
* Database impact: Single option row with minimal queries<br />
* Server processing: Sub-millisecond detection analysis<br />
* Memory usage: Negligible footprint during comment processing</p>


GhostTrap

Advanced 5-layer invisible spam protection for comments. No captcha, no user friction - professional spam blocking.

bruandet

nintechnet

<h4>A true Web Application Firewall</h4>
<p>NinjaFirewall (WP Edition) is a true Web Application Firewall. Although it can be installed and configured just like a plugin, it is a stand-alone firewall that stands in front of WordPress.</p>
<p>It allows any blog administrator to benefit from very advanced and powerful security features that usually aren’t available at the WordPress level, but only in security applications such as the Apache <a href="http://www.modsecurity.org/" title="" rel="nofollow ugc">ModSecurity</a> module or the PHP <a href="http://suhosin.org/" title="" rel="nofollow ugc">Suhosin</a> extension.</p>
<blockquote>
<p>NinjaFirewall requires at least PHP 7.1, MySQLi extension and is only compatible with Unix-like OS (Linux, BSD). It is <strong>not compatible with Microsoft Windows</strong>.</p>
</blockquote>
<p>NinjaFirewall can hook, scan, sanitise or reject any HTTP/HTTPS request sent to a PHP script before it reaches WordPress or any of its plugins. All scripts located inside the blog installation directories and sub-directories will be protected, including those that aren’t part of the WordPress package. Even encoded PHP scripts, hackers shell scripts and backdoors will be filtered by NinjaFirewall.</p>
<h4>Powerful filtering engine</h4>
<p>NinjaFirewall includes the most powerful filtering engine available in a WordPress plugin. Its most important feature is its ability to normalize and transform data from incoming HTTP requests which allows it to detect Web Application Firewall evasion techniques and obfuscation tactics used by hackers, as well as to support and decode a large set of encodings. See our blog for a full description: <a href="https://blog.nintechnet.com/introduction-to-ninjafirewall-filtering-engine/" title="" rel="nofollow ugc">An introduction to NinjaFirewall filtering engine</a>.</p>
<h4>Fastest and most efficient brute-force attack protection for WordPress</h4>
<p>By processing incoming HTTP requests before your blog and any of its plugins, NinjaFirewall is the only plugin for WordPress able to protect it against very large brute-force attacks, including distributed attacks coming from several thousands of different IPs.</p>
<p>See our benchmarks and stress-tests: <a href="https://blog.nintechnet.com/wordpress-brute-force-attack-detection-plugins-comparison-2015/" title="" rel="nofollow ugc">Brute-force attack detection plugins comparison</a></p>
<p>The protection applies to the <code>wp-login.php</code> script but can be extended to the <code>xmlrpc.php</code> one. The incident can also be written to the server <code>AUTH</code> log, which can be useful to the system administrator for monitoring purposes or banning IPs at the server level (e.g., Fail2ban).</p>
<h4>Real-time detection</h4>
<p><strong>File Guard</strong> real-time detection is a totally unique feature provided by NinjaFirewall: it can detect, in real-time, any access to a PHP file that was recently modified or created, and alert you about this. If a hacker uploaded a shell script to your site (or injected a backdoor into an already existing file) and tried to directly access that file using his browser or a script, NinjaFirewall would hook the HTTP request and immediately detect that the file was recently modified or created. It would send you an alert with all details (script name, IP, request, date and time).</p>
<h4>File integrity monitoring</h4>
<p><strong>File Check</strong> lets you perform file integrity monitoring by scanning your website hourly, twicedaily or daily. Any modification made to a file will be detected: file content, file permissions, file ownership, timestamp as well as file creation and deletion.</p>
<h4>Watch your website traffic in real time</h4>
<p><strong>Live Log</strong> lets you watch your website traffic in real time. It displays connections in a format similar to the one used by the <code>tail -f</code> Unix command. Because it communicates directly with the firewall, i.e., without loading WordPress, <strong>Live Log</strong> is fast, lightweight and it will not affect your server load, even if you set its refresh rate to the lowest value.</p>
<h4>Event Notifications</h4>
<p>NinjaFirewall can alert you by email on specific events triggered within your blog. Some of those alerts are enabled by default and it is highly recommended to keep them enabled. It is not unusual for a hacker, after breaking into your WordPress admin console, to install or just to upload a backdoored plugin or theme in order to take full control of your website. NinjaFirewall can also <a href="https://blog.nintechnet.com/ninjafirewall-wp-edition-adds-php-backtrace-to-email-notifications/" title="NinjaFirewall adds PHP backtrace to email notifications" rel="nofollow ugc">attach a PHP backtrace</a> to important notifications.</p>
<p>Monitored events:</p>
<ul>
<li>Administrator login.</li>
<li>Modification of any administrator account in the database.</li>
<li>Plugins upload, installation, (de)activation, update, deletion.</li>
<li>Themes upload, installation, activation, deletion.</li>
<li>WordPress update.</li>
<li>Pending security update in your plugins and themes.</li>
</ul>
<h4>Stay protected against the latest WordPress security vulnerabilities</h4>
<p>To get the most efficient protection, NinjaFirewall can automatically update its security rules daily, twice daily or even hourly. Each time a new vulnerability is found in WordPress or one of its plugins/themes, a new set of security rules will be made available to protect your blog immediately.</p>
<h4>Strong Privacy</h4>
<p>Unlike a Cloud Web Application Firewall, or Cloud WAF, NinjaFirewall works and filters the traffic on your own server and infrastructure. That means that your sensitive data (contact form messages, customers credit card number, login credentials etc) remains on your server and is not routed through a third-party company’s servers, which could pose unnecessary risks (e.g., decryption of your HTTPS traffic in order to inspect it, employees accessing your data or logs in plain text, theft of private information, man-in-the-middle attack etc).</p>
<p>Your website can run NinjaFirewall and be <strong>compliant with the General Data Protection Regulation (GDPR)</strong>. <a href="https://blog.nintechnet.com/ninjafirewall-general-data-protection-regulation-compliance/" title="GDPR Compliance" rel="nofollow ugc">See our blog for more details</a>.</p>
<h4>IPv6 compatibility</h4>
<p>IPv6 compatibility is a mandatory feature for a security plugin: if it supports only IPv4, hackers can easily bypass the plugin by using an IPv6. NinjaFirewall natively supports IPv4 and IPv6 protocols, for both public and private addresses.</p>
<h4>Multi-site support</h4>
<p>NinjaFirewall is multi-site compatible. It will protect all sites from your network and its configuration interface will be accessible only to the Super Admin from the network main site.</p>
<h4>Possibility to prepend your own PHP code to the firewall</h4>
<p>You can prepend your own PHP code to the firewall with the help of an <a href="https://blog.nintechnet.com/ninjafirewall-wp-edition-the-htninja-configuration-file/" rel="nofollow ugc">optional distributed configuration file</a>. It will be processed before WordPress and all its plugins are loaded. This is a very powerful feature, and there is almost no limit to what you can do: add your own security rules, manipulate HTTP requests, variables etc.</p>
<h4>Low Footprint Firewall</h4>
<p>NinjaFirewall is very fast, optimised, compact, and requires very low system resource.<br />
See for yourself: download and install the <a href="https://wordpress.org/plugins/code-profiler/" title="" rel="ugc">Code Profiler</a> plugin and compare NinjaFirewall’s performance with other security plugins.</p>
<h4>Non-Intrusive User Interface</h4>
<p>NinjaFirewall looks and feels like a built-in WordPress feature. It does not contain intrusive banners, warnings or flashy colors. It uses the WordPress simple and clean interface and is also smartphone-friendly.</p>
<h4>Contextual Help</h4>
<p>Each NinjaFirewall menu page has a contextual help screen with useful information about how to use and configure it.<br />
If you need help, click on the <em>Help</em> menu tab located in the upper right corner of each page in your admin panel.</p>
<h4>Need more security ?</h4>
<p>Check out our new supercharged edition: <a href="https://nintechnet.com/ninjafirewall/wp-edition/" title="NinjaFirewall WP+ Edition" rel="nofollow ugc">NinjaFirewall WP+ Edition</a></p>
<ul>
<li>Unix shared memory use for inter-process communication and blazing fast performances.</li>
<li>IP-based Access Control.</li>
<li>Role-based Access Control.</li>
<li>Country-based Access Control via geolocation.</li>
<li>URL-based Access Control.</li>
<li>Bot-based Access Control.</li>
<li><a href="https://blog.nintechnet.com/centralized-logging-with-ninjafirewall/" title="Centralized Logging" rel="nofollow ugc">Centralized Logging</a>.</li>
<li>Antispam for comment and user regisration forms.</li>
<li>Rate limiting option to block aggressive bots, crawlers, web scrapers and HTTP attacks.</li>
<li>Response body filter to scan the output of the HTML page right before it is sent to your visitors browser.</li>
<li>Better File uploads management.</li>
<li>Better logs management.</li>
<li><a href="https://blog.nintechnet.com/syslog-logging-with-ninjafirewall/" title="Syslog logging" rel="nofollow ugc">Syslog logging</a>.</li>
</ul>
<p><a href="https://nintechnet.com/ninjafirewall/wp-edition/" title="" rel="nofollow ugc">Learn more</a> about the WP+ Edition unique features. <a href="https://nintechnet.com/ninjafirewall/wp-edition/?comparison" title="" rel="nofollow ugc">Compare</a> the WP and WP+ Editions.</p>
<h4>Requirements</h4>
<ul>
<li>WordPress 4.9+</li>
<li>Admin/Superadmin with <code>manage_options</code> + <code>unfiltered_html capabilities</code>.</li>
<li>PHP 7.1+</li>
<li>MySQL or MariaDB with MySQLi extension</li>
<li>Apache / Nginx / LiteSpeed / Openlitespeed compatible</li>
<li>Unix-like operating systems only (Linux, BSD etc). NinjaFirewall is <strong>NOT</strong> compatible with Microsoft Windows.</li>
</ul>


NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall

A true Web Application Firewall to protect and secure WordPress.

GhostTrap vs NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall