SilentShield is an invisible, GDPR-compliant CAPTCHA alternative used across e-commerce, SaaS, agencies, forums, non-profits, and enterprise. It blocks bots through behavioral analysis and a proof-of-work nonce — with no cookies and no cross-site tracking. Every plan hosts data in the EU by default, meets WCAG 2.1 AA, and installs with a single API key.
Use Cases
SilentShield for every industry
See how businesses across different industries use invisible bot protection to secure their websites and improve user experience.
- Registration & Login
- Checkout & Payment
- Contact & Forms
- Comments & UGC
- Public APIs
Cross-platform
One shield for every stack.
E-Commerce & Online Shops
Protect checkout forms, product reviews, and account registrations from bots. Reduce fake orders and spam reviews without adding friction for real customers.
- Protect checkout and payment forms
- Prevent fake product reviews and ratings
- Stop automated account creation
- Increase conversion by removing CAPTCHA barriers
SaaS & Web Applications
Secure login pages, sign-up flows and API endpoints. SilentShield checks every request on your server and scales with your application.
- Protect sign-up and login forms
- Secure API endpoints with rate limiting
- Team management for dev teams
- Behavior analytics for suspicious activity
Agencies & Web Studios
Manage bot protection for multiple client websites from one dashboard. White-label widget branding and team collaboration built in.
- Manage multiple domains per account
- Custom widget branding per client
- Team access with role-based permissions
- Centralized analytics across all projects
Forums & Communities
Keep spam bots out of discussion forums, comment sections, and community platforms. Protect user-generated content without annoying real users.
- Block spam registrations automatically
- Protect comment and post forms
- No visual challenges that disrupt discussions
- AI-powered spam detection
Non-Profits & Education
Free plan available for non-profit organizations and educational institutions. Ready for GDPR-compliant use — including sensitive use cases.
- Free plan for qualifying organizations
- Ready for GDPR-compliant use — no names or form contents collected
- Widget tested against WCAG 2.1 AA
- Easy integration without technical expertise
Enterprise & Government
Enterprise-grade security with hosting in Germany, SSO integration, and dedicated support. Custom data retention policies and audit logging.
- Hosting in Germany
- SSO and audit logging
- Custom data retention policies
- Dedicated support and onboarding
Ready to protect your website?
Start for free — no credit card required. Works with any website or framework.
Frequently asked questions
What can I use SilentShield for?
SilentShield protects any web form or endpoint from bots — contact forms, sign-ups, logins, comment sections, checkout, newsletter opt-ins and API endpoints. It verifies real visitors invisibly through behavioral signals and a proof-of-work nonce, so legitimate users pass without solving image puzzles while automated abuse is blocked.
Can SilentShield stop spam on contact forms?
Yes. SilentShield blocks automated form spam on contact and comment forms without showing a visible challenge. It scores behavioral signals in the browser and verifies a proof-of-work nonce on your backend, so real users submit normally while spam bots are rejected — no image puzzles or checkboxes.
Does SilentShield protect login and registration pages?
Yes. SilentShield defends logins and sign-up forms against credential stuffing and fake-account bots. The client script gathers behavioral signals invisibly and issues a nonce your backend verifies at the /api/v1/captcha/verify-nonce endpoint, blocking automated attempts while genuine users sign in without friction or puzzles.
Can SilentShield handle legitimate AI agents?
Yes. The Agent Gateway identifies legitimate AI agents visiting your site and lets you decide what they may do, separate from blocking abusive bots. This means you can allow well-behaved automation while still stopping spam and scraping on the same forms and endpoints.
Is SilentShield suitable for e-commerce checkout?
Yes. SilentShield protects checkout, coupon and account flows on stores from carding and abuse bots. It runs through a client script and backend nonce verification, sets no cookies, does no cross-site tracking and shows shoppers no puzzle in the default mode.
Which platforms does SilentShield support?
SilentShield works on any stack. There is a WordPress plugin (tested for Contact Form 7, Fluent Forms, WordPress comments, WordPress login, WordPress registration, WooCommerce checkout (classic), WPForms, WooCommerce checkout (block checkout), Elementor Forms, and Avada Forms), a theme script embed for Shopify and WooCommerce, and SDKs for Node, PHP, Go and React Native — all driven by a single API key.