kasitoru

Unofficial Community Integration: 
This plugin is a community-made integration for the Yandex SmartCaptcha service. It is not developed, endorsed, or supported by Yandex.
Enhance your WordPress site’s security by integrating the powerful Yandex SmartCaptcha anti-bot system. This plugin allows you to easily add SmartCaptcha to your website forms to effectively combat spam and automated abuse.
How it works? 
This plugin acts as a bridge between your WordPress site and the external Yandex SmartCaptcha service. The smart system analyzes user behavior. If it resembles a bot, the user is prompted to solve a simple task. Real people often pass the check instantly and unnoticed.
What forms can you protect?
<ul>
<li>FREE: Comment form (ideal for blogs)</li>
<li>PRO: Invisible captcha</li>
<li>PRO: Login form (protection against password brute-force attacks)</li>
<li>PRO: Registration form (combat fake users)</li>
<li>PRO: Password recovery form</li>
<li>PRO: Access to the website is granted only after passing the captcha</li>
<li>PRO: Integration with third-party plugins:
<ul>
<li>Contact Form 7</li>
<li>WPForms (Lite & Pro)</li>
<li>Elementor Pro</li>
</ul>
</li>
</ul>
Your benefits:
<ul>
<li>Less spam: Clean comments and user database.</li>
<li>Better security: Protection against brute-force attacks and automated registrations.</li>
<li>Easy to use: Set up in 5 minutes with no programming skills required.</li>
</ul>
Start with the free protection for the comment form, and upgrade to a license if you need to unlock all the plugin’s advanced features!
This plugin is provided “as is” by an independent developer. For official information about Yandex SmartCaptcha, please visit <a href="https://cloud.yandex.com/en/services/smartcaptcha" rel="nofollow ugc">https://cloud.yandex.com/en/services/smartcaptcha</a>.
<h3>External services</h3>
This plugin connects to external APIs to analyze user behavior and retrieve information about the current license status.
It sends a digital fingerprint (signature) of the user’s behavior and their IP address every time one of the forms specified in the plugin settings is submitted. 
This service is provided by LLC “Yandex.Cloud”. 
Terms of Use: https://yandex.ru/legal/cloud_termsofuse 
Privacy Policy: https://yandex.ru/legal/confidential/
The current license status is checked upon user request (when saving the plugin settings) and then automatically every hour. 
The verification process transmits the value of the website’s domain and the license code specified in the plugin’s parameters. 
This service is provided by the plugin author via the digital service kasito.ru. 
Terms of Use: https://kasito.ru/user_agreement/ 
Privacy Policy: https://kasito.ru/privacy_policy/

Advanced SmartCaptcha

A plugin that helps protect your WordPress site forms from spam and bots using the Yandex SmartCaptcha service.

Freemius

Matt Biscay

Tired of deleting spam comments every day? SpamJam is a lightweight, invisible anti-spam solution that blocks automated spam before it hits your database—without annoying your legitimate users with captchas or verification steps.
<h4>Why SpamJam?</h4>
Unlike traditional anti-spam plugins that rely on third-party services or frustrating captchas, SpamJam uses intelligent honeypot techniques and behavioral analysis to silently eliminate spam bots. Your real visitors won’t see any difference, but spam bots will be stopped cold.
<h4>Free Features</h4>
✅ Honeypot Protection – Invisible fields that trap spam bots 
✅ Referrer Validation – Blocks direct form submissions 
✅ Nonce Security – CSRF protection for all comment forms 
✅ Smart Blocklist – Filters common spam keywords 
✅ Zero Configuration – Works immediately after activation 
✅ No Captchas – Never annoy your real users 
✅ Lightweight – Minimal impact on site performance 
✅ WooCommerce Compatible – Works with HPOS
<h4>Pro Features (Premium)</h4>
🚀 Registration Spam Protection – Protect user registration forms with email verification 
🚀 Premium Blocklist – Auto-updating list of 15,000+ spam terms 
🚀 Custom Blocklist – Add your own keywords and patterns to block 
🚀 Geographic Blocking – Block comments from specific countries 
🚀 IP Blocking – Block specific IP addresses or ranges 
🚀 Rate Limiting – Prevent spam floods with configurable limits 
🚀 Email Whitelist – Always allow trusted email addresses 
🚀 Spam Logging & Analytics – Track and analyze blocked spam attempts 
🚀 Content Validation – Set minimum comment length and maximum links 
🚀 Contact Form Protection – Protect Contact Form 7, WPForms, Gravity Forms 
🚀 User Enumeration Blocking – Enhanced security against attacks 
🚀 Priority Support – Get help when you need it
<a href="https://utopique.net/products/spamjam/" rel="nofollow ugc">Upgrade to SpamJam Pro →</a>
<h4>Perfect For</h4>
<ul>
<li>Blogs with active comment sections</li>
<li>Membership sites</li>
<li>WooCommerce stores</li>
<li>Community websites</li>
<li>Any WordPress site tired of spam</li>
</ul>
<h4>How It Works</h4>
SpamJam uses multiple layers of protection:
<ol>
<li>Honeypot Fields – Hidden form fields that only bots fill out</li>
<li>JavaScript Validation – Ensures forms are submitted by real browsers</li>
<li>Referrer Checking – Verifies submissions come from your site</li>
<li>Hash Validation – Cryptographic verification of form integrity</li>
<li>Keyword Filtering – Blocks known spam patterns</li>
</ol>
All of this happens invisibly in the background. Your legitimate users never see a captcha or verification step.
<h4>Privacy First</h4>
SpamJam doesn’t send your data to third-party services. Everything happens on your server, keeping your users’ information private and your site GDPR-compliant.

SpamJam

Stop 99% of spam comments and registrations automatically. Zero captchas, zero hassle. Your visitors won't even notice it's there.

Advanced SmartCaptcha vs SpamJam