Kasuga

Tiny Comment Spam Blocker is a lightweight yet powerful plugin designed to protect your WordPress comments from spam. It employs five different techniques to detect and block unwanted comments:
<ol>
<li>Nonce Verification – Ensures that the comment form submission is genuine.</li>
<li>Submission Time Check – Blocks comments submitted too quickly to prevent bots.</li>
<li>Honeypot Field – Hidden field that traps automated spam bots.</li>
<li>User Agent Validation – Detects suspicious User-Agent strings and blocks them.</li>
<li>Forbidden Word Filtering – Blocks submissions containing words or phrases from a configurable list within the comment body, email address, or IP address.</li>
<li>JavaScript-Based Human Interaction Detection – Sets a verification token when mouse movement, scrolling, or touch interaction is detected.</li>
<li>(Option) Block Non-Japanese Comments – Blocks comments that do not contain Japanese characters (Hiragana, Katakana, or Han/Kanji), primarily targeting machine-translated or foreign spam.</li>
</ol>
These filters are applied in order: if a comment passes the first check, it proceeds to the second, and so on, until all checks are applied or the comment is blocked.
Additional features:
<ul>
<li>Option to log detected spam in a local log file (up to 1.0 MB).</li>
<li>Optional email notifications when spam is detected.</li>
<li>Easy settings page in the WordPress admin panel.</li>
</ul>
<h3>Settings</h3>
The plugin provides the following settings in the WordPress admin panel:
<ul>
<li>Enable Spam Protection – Toggle the spam protection on or off. When disabled, all anti-spam checks are skipped.</li>
<li>Save Spam Detection Log – Enable or disable logging of detected spam. Logs are saved in a local file up to 1.0 MB within the WordPress uploads directory.</li>
<li>Notification Email Address – Enter an email address to receive notifications when spam is detected. Leave blank to disable email notifications.</li>
<li>Minimum Submission Time (seconds) – Set the minimum allowed time between loading the comment form and submitting a comment. Comments submitted faster than this threshold are considered spam.</li>
<li>Forbidden Words List – Enter one forbidden word, phrase, or IP address per line. Submissions containing these entries in the comment body, email address, or IP address will be blocked. Case is insensitive.
<ul>
<li>Example: 
viagra 
online pharmacy 
spam@email.com 
164.138.205.72</li>
</ul>
</li>
<li>Block No Japanese Comments – If enabled, this becomes the final check: Comments that contain Japanese characters (Hiragana, Katakana, or Kanji) will be automatically accepted after passing other security checks. Comments without Japanese characters will be blocked.</li>
</ul>
<h3>Arbitrary Section</h3>
This plugin is designed to be lightweight and fast, ensuring minimal impact on site performance while providing robust protection against comment spam.

Tiny Comment Spam Blocker

A simple and lightweight yet rock-solid plugin that blocks comment spam using multiple automatic detection methods.

MDigital

Honeypot Guard is a powerful, privacy-focused anti-spam solution that protects your WordPress forms without annoying your visitors with CAPTCHAs. Using invisible detection techniques, it blocks spam bots while maintaining a seamless user experience.
<h4>Why Choose Honeypot Guard?</h4>
Unlike CAPTCHA-based solutions that frustrate users and hurt conversions (studies show CAPTCHAs reduce form submissions by 10-40%), Honeypot Guard provides superior spam protection with zero user friction.
<h4>How It Works</h4>
Honeypot Guard uses multiple layers of intelligent detection to catch spam automatically:
<ul>
<li>Invisible Honeypot Fields – Hidden fields that real users never see, but bots fill out automatically</li>
<li>Dynamic Field Rotation – Constantly changing field names make it harder for sophisticated bots to adapt</li>
<li>Timestamp Validation – Detects instant submissions (bots can’t read like humans)</li>
<li>Intelligent Gibberish Detection – Catches keyboard mashing and random text patterns</li>
<li>Advanced Heuristic Analysis – Pattern-based detection of common spam characteristics</li>
<li>Character Script Filtering – Optionally block submissions containing specific character scripts (Cyrillic, Chinese, etc.)</li>
<li>Cookie Verification – Proves JavaScript execution in a real browser environment</li>
</ul>
<h4>Key Features</h4>
<ul>
<li>Zero User Friction – Completely invisible protection, no annoying puzzles</li>
<li>Privacy-Focused – All processing on your server, no third-party tracking by default</li>
<li>Granular Blacklisting – Block by email, domain, IP address, or keywords</li>
<li>Rate Limiting – Prevent spam floods with configurable submission limits</li>
<li>Detailed Spam Logs – View blocked submissions with one-click IP blocking</li>
<li>Multi-Language Admin – Available in 9 languages (English, German, Spanish, Italian, Lithuanian, Swedish, Polish, Estonian, Spanish-Mexico)</li>
<li>GDPR Compliant – No data sent to external services (unless you enable optional AI detection)</li>
<li>Works Automatically – Integrates seamlessly with popular form plugins</li>
</ul>
<h4>Supported Form Plugins</h4>
<ul>
<li>Contact Form 7</li>
<li>WPForms</li>
<li>Gravity Forms</li>
<li>Ninja Forms</li>
<li>Formidable Forms</li>
<li>WordPress Registration Forms</li>
<li>WordPress Comments</li>
<li>WooCommerce Checkout & Registration</li>
<li>bbPress Forums</li>
<li>Any HTML form with minimal configuration</li>
</ul>
<h4>Advanced Protection Options</h4>
<ul>
<li>AI-Powered Gibberish Detection (Optional) – Use OpenAI or Anthropic APIs for advanced content analysis</li>
<li>Meta Pixel Protection – Block form submission tracking until verification</li>
<li>Custom Honeypot Field Names – Define your own field names for added security</li>
<li>Whitelist Trusted Users – Bypass checks for logged-in users or specific IPs</li>
</ul>
<h4>Privacy & Performance</h4>
Honeypot Guard is designed with privacy and performance in mind:
<ul>
<li>Lightweight – Adds virtually zero latency to your site</li>
<li>No External Calls – Basic protection requires no API calls</li>
<li>Cache Compatible – Works with WP Super Cache, W3 Total Cache, WP Rocket, LiteSpeed, and more</li>
<li>No Cookies Required – Core functionality works without cookies (optional cookie verification available)</li>
</ul>
<h4>Professional Support</h4>
Need help? Visit <a href="https://www.mantasdigital.com/honeypot-guard/" rel="nofollow ugc">mantasdigital.com/honeypot-guard</a> for documentation and support.
<h3>Privacy Policy</h3>
Honeypot Guard collects and stores:
<ul>
<li>IP addresses of form submissions (for spam detection and blocking)</li>
<li>Form submission data flagged as spam (for review and pattern detection)</li>
<li>Timestamps of submissions (for rate limiting)</li>
</ul>
This data is stored in your WordPress database and is never sent to external services unless you enable optional AI-powered detection.
You can configure automatic deletion of spam logs in Settings > Honeypot Guard.
<h3>External Services</h3>
This plugin can optionally connect to external AI services for advanced gibberish detection. These services are disabled by default and must be explicitly enabled by the administrator.
<h4>OpenAI API (Optional)</h4>
When AI gibberish detection is enabled and configured with an OpenAI API key:
<ul>
<li>What it does: Analyzes suspicious form field content to detect nonsensical or spam text</li>
<li>Data sent: Only the specific text field being analyzed (not the entire form submission)</li>
<li>When sent: Only when a submission is flagged as potentially suspicious and AI detection is enabled</li>
<li>Service provider: OpenAI, L.L.C.</li>
<li>Terms of use: https://openai.com/policies/terms-of-use</li>
<li>Privacy policy: https://openai.com/policies/privacy-policy</li>
</ul>
<h4>Anthropic API (Optional)</h4>
When AI gibberish detection is enabled and configured with an Anthropic API key:
<ul>
<li>What it does: Analyzes suspicious form field content to detect nonsensical or spam text</li>
<li>Data sent: Only the specific text field being analyzed (not the entire form submission)</li>
<li>When sent: Only when a submission is flagged as potentially suspicious and AI detection is enabled</li>
<li>Service provider: Anthropic, PBC</li>
<li>Terms of use: https://www.anthropic.com/legal/consumer-terms</li>
<li>Privacy policy: https://www.anthropic.com/legal/privacy</li>
</ul>
Important: These services are entirely optional. Honeypot Guard provides effective spam protection without any external services using its built-in detection methods.
<h3>Additional Info</h3>
<ul>
<li><a href="https://www.mantasdigital.com/honeypot-guard/" rel="nofollow ugc">Plugin Website</a></li>
<li><a href="https://www.mantasdigital.com/honeypot-guard/" rel="nofollow ugc">Documentation</a></li>
<li><a href="https://www.mantasdigital.com/" rel="nofollow ugc">Support</a></li>
<li><a href="https://github.com/mantasdigital/honeypot-guard" rel="nofollow ugc">GitHub Repository</a></li>
</ul>

Honeypot Guard – Silent Anti-Spam

Anti-spam protection for forms, signups, and comments using advanced honeypot techniques. No CAPTCHAs, no user friction.

Tiny Comment Spam Blocker vs Honeypot Guard – Silent Anti-Spam