Captcha for Contact Form 7

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Add different Captcha Options to Contact Form 7

Author:Forge12 Interactive GmbH (profile at wordpress.org)
WordPress version required:5.2
WordPress version tested:6.9.4
Plugin version:2.7.0
Added to WordPress repository:11-10-2021
Last updated:02-04-2026
Rating, %:92
Rated by:18
Plugin URI:https://www.forge12.com/product/wordpress-cap...
Total downloads:221 025
Active installs:10 000+
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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, 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
– Gravity Forms
– Fluent Forms
– JetFormBuilder
– Avada (Fusion Builder) Forms

WooCommerce:
– Checkout (classic & PayPal Payments)
– Login
– Registration

WordPress Core:
– Login form (wp-login.php)
– Registration form
– Comment forms

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:

  1. Captcha – Arithmetic math, honeypot, or image-based captcha
  2. JavaScript Protection – Detects submissions from bots without JS support
  3. Browser Detection – Validates User-Agent strings
  4. Timer Protection – Blocks submissions faster than a human can type
  5. Multiple Submission Protection – Prevents rapid duplicate submissions
  6. IP Rate Limiting – Limits requests per IP and time window
  7. IP Blacklist – Block known bad IPs
  8. Content Rules – Limit URLs, block BBCode, keyword blacklist
  9. Whitelist – Skip validation for admins, logged-in users, or specific emails/IPs
  10. SilentShield API (Beta) – Cloud-based spam detection

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.

Privacy & Telemetry

  • No cookies, no user tracking.
  • Encrypted IP storage (max. 2 months, only for spam defense).
  • Telemetry is optional and anonymized.
  • You can disable telemetry anytime in plugin settings.

Collected fields:
– 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

GDPR / DSGVO Compliance
– Basis: Art. 6 Abs. 1 lit. f DSGVO (legitimate interest – plugin optimization).
– No personal data, no cookies, no user tracking.

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