Stargazer

<h4>An easy and effective solution against Comment Spam</h4>
<p>WP-BlackCheck combines various ideas to protect your blog from spam.</p>
<h4>Fearures</h4>
<ul>
<li>Easy Installation</li>
<li>Block known spammers</li>
<li>Block Trackback/Pingback spam</li>
<li>No need to adjust default templates</li>
<li>Spam counter on the dashboard</li>
<li>Statistics</li>
</ul>
<h4>Languages</h4>
<ul>
<li>Albanian (thanks to Taulant Ceka – http://sem.al )</li>
<li>English</li>
<li>German</li>
<li>Slovakian (thanks to Black Cat Artworks – http://blackcatartworks.eu/ )</li>
</ul>
<p>If you want to see this plugin in your language, feel free to contact me or use <a href="https://www.transifex.net/projects/p/wpbc/resource/plugin/" rel="nofollow ugc">transifex.net</a> to contribute.</p>
<h4>Links</h4>
<ul>
<li><a href="http://my.stargazer.at/" title="Authors blog" rel="nofollow ugc">Blog</a></li>
<li><a href="http://bugs.stargazer.at/" title="Bugtracker" rel="nofollow ugc">Bugtracker</a></li>
<li><a href="http://www.twitter.com/ToeiRei" rel="nofollow ugc">Twitter</a></li>
</ul>
<h4>History</h4>
<p>Blocking spammers via htaccess or other server settings would do the job, but that would require<br />
to keep all the files in sync. So I decided to write a centralized solution that enables<br />
innocent users to remove their IP from the blacklist via removal request. As a blacklist gets queried<br />
way too often, I added some local detection of spammers to reduce load at my side.<br />
By now many additional features have been added, making this plugin a full grown anti-spam solution.</p>


WP-BlackCheck

WP-BlackCheck is an Anti-Spam Solution for Wordpress blocking spam using local detection and a centralized Blacklist Service.

YoOhw Studio

B.Ng

<p><strong>Blacklist Manager</strong> is a WooCommerce blacklist, anti-fraud, and spam prevention plugin for stores that need to block fake orders, suspicious customers, spam registrations, and unwanted form submissions.</p>
<p>Use blacklist rules for <strong>phone numbers</strong>, <strong>email addresses</strong>, <strong>IP addresses</strong>, and <strong>email domains</strong> at WooCommerce checkout, registration, comments, product reviews, REST API orders, and supported WordPress forms. Built-in checkout email verification and phone verification can also challenge risky customers before an order is accepted.</p>
<p>The plugin works with WooCommerce Classic Checkout, WooCommerce Checkout Blocks, Contact Form 7, Gravity Forms, and WPForms.</p>
<p><a href="https://yoohw.com/product/blacklist-manager-premium/" rel="nofollow ugc">Premium version</a> | <a href="https://yoohw.com/global-blacklist-plan/" rel="nofollow ugc">Global Blacklist</a> | <a href="https://yoohw.com/docs/category/woocommerce-blacklist-manager/" rel="nofollow ugc">Documentation</a> | <a href="https://yoohw.com/support/" rel="nofollow ugc">Support</a> | <a href="https://sandbox.yoohw.com/demo/yobm_demo.html" rel="nofollow ugc">Demo</a></p>
<h3>Key Features</h3>
<ul>
<li><strong>WooCommerce checkout protection</strong>: Block or review orders using phone, email, IP address, and email domain rules.</li>
<li><strong>Suspect and blocked lists</strong>: Review risky identities before moving confirmed abuse to the blocklist.</li>
<li><strong>Fast blacklist management</strong>: Add entries from the dashboard or directly from the WooCommerce order screen.</li>
<li><strong>Registration protection</strong>: Stop signups that match blocked emails, IP addresses, or email domains.</li>
<li><strong>Comment and review blocking</strong>: Prevent comments and product reviews from blacklisted emails.</li>
<li><strong>Form spam protection</strong>: Check Contact Form 7, Gravity Forms, and WPForms submissions against blacklist data.</li>
<li><strong>Checkout email verification</strong>: Require a verification code before allowing checkout to continue.</li>
<li><strong>Checkout phone verification</strong>: Require an SMS verification code for phone-based checkout validation.</li>
<li><strong>WooCommerce REST API protection</strong>: Block blacklisted identities from creating orders through external apps or integrations.</li>
<li><strong>Custom notices and alerts</strong>: Customize customer-facing block messages and admin email alerts.</li>
<li><strong>Dashboard stats</strong>: Review blacklist entries and detection attempts from the admin area.</li>
</ul>
<h3>Checkout Compatibility</h3>
<p>Blacklist Manager supports WooCommerce Classic Checkout, <a href="https://woocommerce.com/checkout-blocks/" rel="nofollow ugc">WooCommerce Checkout Blocks</a>, and many third-party checkout plugins that use standard WooCommerce checkout and order creation flows.</p>
<h3>Global Blacklist Decisions</h3>
<p>Blacklist Manager can connect your store to <strong>Global Blacklist Decisions</strong>, a fraud-prevention service that checks order identities such as email, phone, IP address, address, and email domain against broader risk data.</p>
<p><a href="https://yoohw.com/global-blacklist-plan/" rel="nofollow ugc">Learn more about Global Blacklist Decisions</a></p>
<h3>Premium Features</h3>
<p>Blacklist Manager Premium adds deeper fraud review and automation for stores that need more than manual blacklist rules:</p>
<ul>
<li>Risk scoring for blacklist, identity, IP, address, payment, device, and order pattern signals.</li>
<li>Automation rules to auto-suspect, auto-block, or auto-review orders.</li>
<li>Payment intelligence for Stripe, PayPal, Mollie, Braintree, WooPayments, AVS, card country, and payer mismatch signals.</li>
<li>Device identity checks to link repeat abuse across emails, phones, IPs, addresses, and accounts.</li>
<li>Advanced blocking for customer name, address, device, disposable email, disposable phone, country, VPN, and proxy signals.</li>
<li>Activity logs, import/export, cleanup tools, permissions, multi-store sync, CAPTCHA, SMS, IP intelligence, geocoding, and email validation integrations.</li>
</ul>
<p><a href="https://yoohw.com/product/blacklist-manager-premium/" rel="nofollow ugc">Explore Premium</a></p>
<h3>Supported Plugins and Integrations</h3>
<h4>Supported plugins</h4>
<ul>
<li><a href="https://wordpress.org/plugins/woocommerce/" rel="ugc">WooCommerce</a></li>
<li><a href="https://wordpress.org/plugins/contact-form-7/" rel="ugc">Contact Form 7</a></li>
<li><a href="https://www.gravityforms.com/" rel="nofollow ugc">Gravity Forms</a></li>
<li><a href="https://wordpress.org/plugins/wpforms-lite/" rel="ugc">WPForms</a></li>
</ul>
<h4>Premium integrations</h4>
<ul>
<li>WooCommerce Stripe Gateway, Payment Plugins for Stripe WooCommerce, WooCommerce PayPal Payments, Payment Plugins for PayPal WooCommerce, Braintree for WooCommerce, Mollie Payments for WooCommerce, and WooPayments.</li>
<li>Cloudflare, reCAPTCHA v3/v2, hCaptcha, IP-api, BigDataCloud, ZeroBounce, NumCheckr, Google Maps, Yo Credits, Twilio, and Textmagic.</li>
</ul>
<h3>Use Cases</h3>
<ul>
<li>Block fake WooCommerce orders before payment review.</li>
<li>Prevent repeat abuse from known phone numbers, email addresses, IP addresses, and domains.</li>
<li>Reduce spam registrations, comments, product reviews, and form submissions.</li>
<li>Require email or phone verification during checkout.</li>
<li>Review suspicious customers before moving them to the blocklist.</li>
<li>Use Global Blacklist Decisions as an additional fraud signal.</li>
</ul>


Blacklist Manager – WooCommerce Anti-Fraud, Blacklist & Checkout Verification

Block risky WooCommerce orders, spam signups, and form submissions with blacklist rules plus checkout email and phone verification.

WP-BlackCheck vs Blacklist Manager – WooCommerce Anti-Fraud, Blacklist & Checkout Verification