Giannis Kipouros

<p>Ensure the security of your WooCommerce store with Checkout Guard, a powerful plugin designed to fortify your checkout process. Checkout Guard offers a range of features to protect your online store from spam and unwanted orders.</p>
<h3>Key Features:</h3>
<h4>1. Email Restrictions:</h4>
<p>Easily restrict checkout for specific emails and email domains. Keep out unwanted traffic and enhance the security of your online transactions.</p>
<h4>2. Country-Based Restrictions:</h4>
<p>Implement checkout restrictions based on user billing country. Tailor your store’s accessibility and ensure a smoother shopping experience for your targeted audience.</p>
<h4>3. IP Address Blocking:</h4>
<p>Take control of your store’s security by restricting checkout for specific IP addresses. Safeguard against malicious activity and maintain a secure online environment.</p>
<h4>4. Total Cost Range Restrictions:</h4>
<p>Fine-tune your order regulations by restricting checkout for orders within a specified total cost range. Customize the limits to align with your store’s pricing policies.</p>
<p><strong>Important:</strong> This plugin is an extension of the <a href="https://wordpress.org/plugins/woocommerce/" rel="ugc">WooCommerce</a> plugin, and it cannot function independently.</p>
<h3>Filters and Actions</h3>
<p>Multiple hooks exist that allows you to customize the plugin even further. If you need any extra hooks, please don’t hesitate to ask.</p>


Checkout Guard: Block Spam Woo Orders


Amazing plugin, Giannis, and a fantastic initiative. Thanks for publishing your hard work.  


Fantastic initiative, great concept.

Enhance Woo checkout security. Block spam orders and protect your revenue and customer's trust.

Daniel

<p><strong>This is ALTCHA Plugin version 1.</strong></p>
<p><strong>ALTCHA Plugin version 2 is now available, offering improved protection and enhanced reliability. An upgrade is recommended for all users.</strong></p>
<p><a href="https://altcha.org/docs/v2/wordpress" rel="nofollow ugc">Learn more</a> | <a href="https://altcha.org/docs/v2/wordpress/install" rel="nofollow ugc">Installation guide</a> | <a href="https://altcha.org/docs/v2/wordpress/migrating-from-v1/" rel="nofollow ugc">Migration guide</a></p>
<p>What’s new in version 2:</p>
<ul>
<li><strong>Effective</strong>: blocks 99% of spam and abuse attempts</li>
<li><strong>Invisible for users</strong>: frictionless protection, no puzzles or CAPTCHAs</li>
<li><strong>Works everywhere</strong>: plugin-agnostic <a href="https://altcha.org/docs/v2/wordpress/features/#request-interceptor--works-everywhere" rel="nofollow ugc">Request Interceptor</a> integrates with any form plugin</li>
<li><strong>Handles heavy traffic</strong>: stay online with <a href="https://altcha.org/docs/v2/wordpress/features/#under-attack-mode--stay-online-under-pressure" rel="nofollow ugc">Under Attack Mode</a></li>
<li><strong>Stops abuse at scale</strong>: firewall and rate limiting included</li>
<li><strong>Privacy-first</strong>: 100% GDPR-compliant and fully accessible</li>
<li><strong>Unlimited</strong>: no external services, unlimited verifications</li>
</ul>
<p>Learn more about ALTCHA at <a href="https://altcha.org" rel="nofollow ugc">altcha.org</a>.</p>
<p><a href="https://altcha.org" rel="nofollow ugc">ALTCHA</a> provides a free, open-source Captcha alternative utilizing a proof-of-work mechanism to safeguard your website against spam and unwanted content. Our anti-spam solution ensures robust spam protection without compromising user privacy.</p>
<p>Unlike other solutions, ALTCHA is free, open-source, and self-hosted. It operates independently without external services, avoids the use of cookies and fingerprinting, refrains from user tracking, and maintains full compliance with GDPR regulations.</p>
<h3>Free Mode</h3>
<p>The free self-hosted mode is enabled by default after installation. No additional setup is required, except enabling the integrations you need in the plugin settings.</p>
<h3>Privacy</h3>
<h4>No cookies, no tracking</h4>
<p>ALTCHA prioritizes user privacy by avoiding the use of cookies and fingerprinting techniques.</p>
<h4>No external service</h4>
<p>Operating in Self-hosted mode (the default setting), this plugin remains fully contained within your WordPress installation, eliminating any reliance on external services. You can opt-in for our SaaS version to utilize the Spam Filter API. For more information visit https://altcha.org.</p>
<h3>Modes of Operation</h3>
<p>This plugin operates in two modes, you can select which mode you want in the settings (see API Region):</p>
<ul>
<li>Self-hosted – free, fully self-contained without external services.</li>
<li>Custom or SaaS API – requires a server such as <a href="https://altcha.org/docs/v2/sentinel/" rel="nofollow ugc">ALTCHA Sentinel</a>.</li>
</ul>
<h3>REST API</h3>
<p>This plugin requires the WordPress REST API. If you are using any “Disable REST API” plugins, ensure that the endpoint <code>/altcha/v1/challenge</code> is allowed.</p>
<h3>Supported Integrations</h3>
<ul>
<li>CoBlocks</li>
<li>Contact Form 7</li>
<li>Elementor Pro Forms</li>
<li>Enfold Theme</li>
<li>Formidable Forms</li>
<li>Forminator</li>
<li>GravityForms</li>
<li>HTML Forms</li>
<li>WPDiscuz</li>
<li>WPForms</li>
<li>WP-Members</li>
<li>WordPress Login, Register, Password reset</li>
<li>WordPress Comments</li>
<li>WooCommerce</li>
<li>Custom HTML (with a short code <code>[altcha]</code>)</li>
</ul>
<h3>Source Code</h3>
<p>All source code for the plugin, and the ALTCHA widget is available on GitHub. In the repository, you’ll also find versions of non-minified JavaScript and CSS assets:</p>
<ul>
<li>Plugin: https://github.com/altcha-org/wordpress-plugin</li>
<li>ALTCHA Widget: https://github.com/altcha-org/altcha</li>
</ul>
<h3>Terms of Service And Privacy Policy for SaaS</h3>
<ul>
<li>Privacy Policy: https://altcha.org/privacy-policy</li>
<li>Terms of Service: https://altcha.org/terms-of-service</li>
</ul>


ALTCHA Spam Protection


ALTCHA is a free, open-source Captcha alternative. It uses a proof-of-work mechanism to protect your website from spam and unwanted content. Unlike other solutions, ALTCHA is self-hosted, avoids cookies and tracking, and is fully GDPR compliant. It also features a powerful spam filter that integrates seamlessly with your WordPress site. With options for self-hosted and external service modes, ALTCHA offers flexibility and robust protection for any WordPress site.


ALTCHA: Free, Open-Source Captcha Alternative with Robust Spam Protection


I've installed ALTCHA on a non-WordPress website a little under a year ago, and it's been protecting that website from spam registrations (these were an issue there!) ever since.



Now I'm using it on a couple WordPress websites as well, and it seems to work just as fine, albeit it's only been a few days.



If you've ever been annoyed by having to repeatedly select busses or fire hydrants, or move parrots around, and you don't want to push that experience onto your visitors,  ALTCHA can be the solution. It's non-intrusive to normal users (the calculation performed only takes a couple seconds), but is a great way to deter spammers, who would rather automatically submit a few hundred forms than spend that same amount of CPU time on a calculation required to only submit that one form on your page.



Oh, and I love that this plugin is open source and no-nonsense. It will never clutter your WordPress UI with calls to upgrade to pro or notifications about Black Friday sales. It adds a single sub-menu item under Settings, and is very civil in all regards. And it also respects your visitor privacy: no data will be transmitted to other servers than yours by default due to having it installed, unless you explicitly configure it to use ALTCHA's cloud API, which adds some extra functionality in addition to filtering out bots.



All that said, it's not a silver bullet of course, and you may want to keep Akismet enabled too as a second line of defence.


Great self-contained spam protection


Altcha v1 was brilliant - did just what I wanted seamlessly.  Sadly when I installed v2 the login blocked for some users (and it was impossible to see why).  I think the increased comms to the central system were to blame, but I'm not sure.  I can't switch back to v1 without having the 'nag' to upgrade constantly visible on the plugin page, and putting the shortcode back into all the forms.  A quick switch to Cloudfare Turnstile and all is working nicely.  Sad, though, because Altcha looked great.


v1 was great; v2 - I had to uninstall

ALTCHA offers a free, open-source Captcha alternative, ensuring robust spam protection while respecting user privacy and GDPR compliance.

Checkout Guard: Block Spam Woo Orders vs ALTCHA Spam Protection