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.

Neutrope Inc.

Neutrope Quiet Shield adds lightweight spam and unsolicited-sales filtering to 
Contact Form 7 submissions. The idea is simple: let spam and cold sales 
mail be received quietly without disturbing the people running the site.
Each submission is scored against a small set of checks you control:
<ul>
<li>Japanese character ratio: flag messages with too little Japanese text.</li>
<li>URL limit: flag messages that contain more links than you allow.</li>
<li>Submission speed: flag forms submitted suspiciously fast after they were 
shown. The timing value is signed so it cannot be tampered with.</li>
<li>Repeat submissions: flag three or more submissions from the same visitor 
within five minutes.</li>
<li>NG words: flag messages containing any keyword from your own list.</li>
</ul>
When a submission is flagged you choose what happens with Quiet Mode:
<ul>
<li>Quiet Mode on (default): the visitor sees the normal success message, but 
no mail is sent. The reason is written to the log.</li>
<li>Quiet Mode off: the submission is stopped with the standard Contact Form 
7 error message.</li>
</ul>
The plugin is deliberately small. It makes no external network requests, 
creates no database tables, and shows no ads or upsells. Configuration is 
stored in a single option, and the log keeps only decision metadata plus a 
short, salted IP hash. Message bodies, e-mail addresses and names are never 
stored.
If Contact Form 7 is not active, the plugin still activates safely and 
shows an admin notice instead of causing an error.
This plugin is an independent add-on and is not affiliated with or endorsed 
by the authors of Contact Form 7.
<h3>Features</h3>
<ul>
<li>Five independent checks, each configurable from one settings page.</li>
<li>Quiet Mode to silently drop flagged mail or stop it with an error.</li>
<li>Dashboard with today’s passed and blocked counts and a recent activity 
log.</li>
<li>Tamper-evident submission-speed measurement using a signed field.</li>
<li>IP addresses are hashed, never stored in raw form.</li>
<li>No external requests, no tracking, no database tables, no ads.</li>
<li>GPL-2.0-or-later. The full license text is bundled in the LICENSE file.</li>
</ul>
<h3>License</h3>
This plugin is licensed under the GPL-2.0-or-later. The full license text 
is included in the bundled LICENSE file. 
License URI: https://www.gnu.org/licenses/gpl-2.0.html

Neutrope Quiet Shield

Quietly deflect spam and unsolicited sales messages sent through Contact Form 7. Lightweight, no external calls, no stored personal data.

Advanced SmartCaptcha vs Neutrope Quiet Shield