SilentShield – Captcha & Anti-Spam for WordPress (CF7, WPForms, Elementor, WooCommerce) vs Prosopo Procaptcha

SilentShield is a unified captcha and anti-spam plugin for WordPress. It works with the most popular form builders and protects login, registration, and comment forms – without slowing your site. Why choose SilentShield? – Invisible defense – Captcha, honeypot, and blacklists working silently. – Instant results – Install, activate, and stop spam. – Universal support – Works with Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms, Forminator, Kadence, WooCommerce, and more. – Privacy-first – No cookies, no tracking, fully GDPR / DSGVO compliant. SilentShield doesn’t just protect forms. It protects your time, your customers, your business. Core Features Invisible Captcha (Arithmetic, Honeypot, Image) Smart IP Blocking & Blacklists Spam filters for links, code & keywords Whitelisting for admins & customers GDPR-ready, no cookies, no tracking Supported Form Plugins & Integrations SilentShield protects forms from all major WordPress form builders and core features: Form Builders: – Contact Form 7 (CF7) – WPForms / WPForms Lite – Elementor Pro Forms (classic widget and v4 “atomic” forms) – Gravity Forms – Fluent Forms – Formidable Forms – Ninja Forms – Forminator – JetFormBuilder – Kadence Blocks (Advanced Form) – Jetpack Forms (contact form block and shortcode) – Avada (Fusion Builder) Forms Newsletter: – MC4WP – Mailchimp for WordPress (signup forms) WooCommerce: – Checkout – block (the default for new shops since WooCommerce 8.3) – Checkout – classic (incl. PayPal Payments) – Login – Registration – Lost password – Account details WordPress Core: – Login form (wp-login.php) – Registration form – Lost password form – Comment forms (including WooCommerce product reviews) Communities & Forums: – bbPress (new topics and replies) – BuddyPress (member registration) Donations: – GiveWP (classic donation form; the visual-builder form is not yet covered) Other: – Ultimate Member (Login & Registration) – WP Job Manager (Job Applications) Each integration can be enabled or disabled individually under Settings > Extended. Protection Layers SilentShield uses 10+ protection mechanisms working together: Captcha – Arithmetic math, honeypot, or image-based captcha JavaScript Protection – Detects submissions from bots without JS support Browser Detection – Validates User-Agent strings Timer Protection – Blocks submissions faster than a human can type Multiple Submission Protection – Prevents rapid duplicate submissions IP Rate Limiting – Limits requests per IP and time window IP Blacklist – Block known bad IPs Content Rules – Limit URLs, block BBCode, keyword blacklist Gibberish Detection – Recognises submissions filled with random characters, the kind a bot writes when it only needs the form to go through. Unlike every other check it does not depend on the sender’s browser, so a bot driving a real browser cannot pass it by playing along. Starts in observation mode and blocks nothing until you switch it on. Whitelist – Skip validation for admins, logged-in users, or specific emails/IPs SilentShield API – Cloud-based spam detection (silentshield.io) The Promise SilentShield is not “just another plugin.” It’s an invisible wall against the background noise of the internet. Activate once – and your forms are human again. Want more? SilentShield API Everything above is free and stays free. No feature is held back, no submission limit, no account needed. What the free plugin cannot do is recognise a bot that behaves like a person — one driving a real browser, solving the captcha, typing at human speed. Rules can only catch what looks wrong, and those do not. The SilentShield API answers that with behaviour analysis and browser fingerprinting, scored in the cloud, and it usually decides without showing anyone a captcha at all. Switch it on and the local protections stay exactly where they are as a fallback — if the API is ever unreachable, your forms are still protected. There is a free plan and a trial, and you can see what it would have caught before you pay for anything: turn on Comparison Mode and the plugin logs what the API would have decided, alongside what your local rules actually did. 👉 Plans and free trial at silentshield.io Privacy & Telemetry No cookies, no user tracking. Encrypted IP storage (max. 2 months, only for spam defense). Every transmission described below is optional and can be switched off in the plugin settings. The plugin’s built-in Privacy page shows which of these are active on your site, what that means, and gives you ready-made privacy-policy snippets in 25 languages. 1. Plugin statistics (setting “Telemetry”) Anonymous, no personal data, sent at most once a day: – plugin_slug, plugin_version – snapshot_date – settings_json (anonymized config – only boolean/integer flags, no free-text) – features_json (enabled features) – created_at, first_seen, last_seen – counters_json (spam events) – wp_version, php_version, locale 2. AI-crawler observation (setting “Observe AI crawlers”, on by default; SILENTSHIELD_OBSERVER to force off) Sent only for requests identified as an AI crawler — never for your human visitors. Delivered after the page has already been sent to the visitor: – ua (the crawler’s User-Agent), ip, path (without query string), method – The IP address is pseudonymised on the server (daily keyed hash) and never stored in the clear. 3. Blocked-request reports (only with “Block AI crawlers (enforce)” on; follows the observation setting above) Same fields as (2), plus the outcome (deny / throttle), for every request enforcement turned away. Note that a block rule which is not restricted to a specific crawler can also catch a human visitor — that request is then reported in the same way. 4. Form assessment (only with the SilentShield API enabled) See the API snippet on the plugin’s Privacy page for the full description.

Prosopo Procaptcha is a GDPR-compliant, privacy-first CAPTCHA solution, offering seamless bot protection without compromising user data. Key Features of Procaptcha Private & GDPR Friendly – No data storage ensures full compliance with privacy laws. Seamless Integration – A drop-in replacement for reCaptcha and hCaptcha, allowing setup within minutes. Customizable Defense – Easily adjust bot protection settings to meet your site’s specific needs. Affordable – Enjoy a top-value CAPTCHA solution with a generous free tier. Why Use Procaptcha in WordPress? Official WordPress Plugin – Specifically built for WordPress, ensuring secure and reliable integration. Multiple Built-In Integrations – Works seamlessly with core WordPress forms and popular form plugins. Supported list provided below. Multilingual – Completely translated into German (DE), Spanish (ES), French (FR), Italian (IT), and Portuguese (PT). Documentation – Plugin documentation is available to help you get the most out of the plugin. Third-Party Service Notice For proper functionality, the plugin loads the Prosopo Procaptcha JavaScript on your chosen forms to display the CAPTCHA on the client side. Upon form submission, the plugin communicates with the Prosopo Procaptcha API server-side to verify the CAPTCHA response. Please review the Prosopo Privacy Policy and Terms and Conditions to fully understand data handling practices. Supported forms Form Plugins: Contact Form 7 – Add the [prosopo_procaptcha] field to your form. Everest Forms – Add the Prosopo Procaptcha field to your form (the Advanced Fields group). Fluent Forms – Add the Prosopo Procaptcha field to your form (the Advanced Fields group). Formidable Forms – Add the Prosopo Procaptcha field to your form. Gravity Forms – Add the Prosopo Procaptcha field to your form (the Advanced Fields group). Ninja Forms – Add the Prosopo Procaptcha field to your form (the Miscellaneous group). User Registration – Add the Prosopo Procaptcha field to your form (the Extra Fields group). WP Forms – Add the Prosopo Procaptcha field to your form (the Standard Fields group). WordPress Core Forms: Login Registration Lost Password Comments Post/Page password protection Visit the plugin settings to enable protection for these forms. Account Plugins: The Procaptcha plugin is officially compatible with the following plugins, that extend the WordPress account features: Security: 1. All-In-One Security (Hide backend feature) 2. LWS Hide Login (Hide backend feature) 3. Login With Ajax (AJAXify Login Forms feature) 4. Security Optimizer (Hide backend feature) 5. Solid Security (Hide backend feature) 6. WPS Hide Login Branding: 1. Branda White Labeling 2. Custom Login 3. Login Customizer 4. Login Designer 5. Login Page Customizer by Colorlib 6. Loginpress 7. Theme My Login 8. Ultimate Dashboard 9. White label 10. YITH Custom Login Account-related: 1. Simple Membership 2. User Registration 3. Memberpress – Login, Reset password: via Procaptcha plugin settings -> Core forms. Membership register – via on-membership settings While only the items above are tested, overall, the Procaptcha plugin supports all the plugins with custom account forms that use the native WordPress account hooks. Other Integrations: BBPress – Account forms from the shortcodes; Forum forms: Open the target forum settings to enable topic and reply forms protection. Elementor Pro – Form widgets: use the Prosopo Procaptcha field. Login widgets: use the Prosopo Procaptcha checkbox in the Form Fields tab (Login must be enabled in the Procaptcha plugin settings->Core forms). JetPack (Forms) – Gutenberg form block: Add the Group block with the prosopo_procaptcha shortcode inside the target form block. WooCommerce – My Account forms; Classic Checkout, Blocks Checkout, Order Tracking forms: enable protection in the WooCommerce tab of the plugin settings. Spectra – Form block: add hidden input with the prosopo_procaptcha name Beaver Builder – Contact, Subscribe forms: enabled protection in the target form settings; Login form: Procaptcha plugin settings->Core forms. Built-In Integrations: Some of the plugins have Procaptcha support in its core, so you don’t need this plugin to use Procaptcha with them: Mailchimp for WordPress Site reviews More integrations coming soon!