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Protect your forms from spam with hard to break and easy to read Secure CAPTCHA images from <a href="http://www.securecaptcha.net/" rel="nofollow ugc">SecureCAPTCHA.net</a>.
Secure CAPTCHA allows to distinguish between form submition made by human and script (robot, bot, program etc.). 
It gives you ability to reject all form submitions made in automatic way. 
Secure CAPTCHA was designed to be both hard to break with a script and easy to solve by the humans.
Most of available simple CAPTCHA libraries are easy to break. 
They use one font and scale or rotate each letter individually. 
There are scripts on the web that are capable to break them. 
Some CAPTCHAs add random lines and patterns, but it make the text harder to read by a human.
Secure CAPTCHA is made with handwriting. 
Letters are connected together and it is difficult for a script to split text into individual letters. 
Moreover, each letter looks somewhat differently depending on it’s two neighbour letters. 
And finally, the whole text is transformed with some randomly chosen nonlinear transformation.
Many CAPTCHA implementations on the web are really hard to read. 
Sometimes it is even impossible. 
Secure CAPTCHA is easy to solve for a human: our images have big letters and high contrast between the text and the background.

Secure CAPTCHA

Protect your forms from spam with hard to break and easy to read Secure CAPTCHA images from SecureCAPTCHA.net.

CaptchaMaster

WP Advanced Math Captcha is a robust, 100% effective, and easy-to-use CAPTCHA solution designed to safeguard your WordPress site from spam and bots. With its new integrations for WooCommerce, WPForms, and Formidable Forms, it now protects login, registration, password reset, comments, Contact Form 7, bbPress, WooCommerce account forms, WPForms, and Formidable Forms — all in one lightweight plugin!
Say goodbye to annoying spam and hello to a secure, user-friendly experience. Whether you’re running an e-commerce store, a blog, a forum, or a custom form-powered site, this plugin offers customizable math-based challenges that are simple for humans but tough for bots.
<h3>Key Features:</h3>
<ul>
<li>New! WooCommerce Integration: Secure checkout, login, registration, and password reset forms (tested on works well on WooCommerce ver.9.8.5)</li>
<li>New! WPForms Integration: Protect WPForms with math-based CAPTCHA.</li>
<li>New! Formidable Forms Integration: Secure Formidable Forms (Lite and Pro) with customizable CAPTCHA.</li>
<li>Protect multiple areas: WordPress login, registration, lost password, comments, Contact Form 7, bbPress, WPForms, and Formidable Forms</li>
<li>Hide CAPTCHA for logged-in users.</li>
<li>Choose mathematical operations (addition, subtraction, multiplication).</li>
<li>Display CAPTCHA as numbers, words, or both.</li>
<li>Support for multiple CAPTCHAs on a single page.</li>
<li>Block direct spambot access to <code>wp-comments-post.php</code>.</li>
<li>Customizable CAPTCHA field title and input time.</li>
<li>IP and GEO filtering: Hide CAPTCHA for trusted IPs or countries.</li>
<li>Auto IP blocking to stop repeated bot attempts.</li>
<li>Detailed statistics and logs (daily, weekly, monthly, yearly).</li>
<li>Translation-ready with included <code>.pot</code> file.</li>
</ul>
<h3>License</h3>
This plugin is licensed under the MIT License. See the full license text in the plugin files for more details.

WP Advanced Math Captcha

Great


nice, simple and very powerful to use. liked a lot. installed om few my sites


All work great

great

Protect your WordPress site with a powerful and user-friendly Math Captcha. Now with seamless WooCommerce, WPForms, and Formidable Forms integration!

Secure CAPTCHA vs WP Advanced Math Captcha