SilentShield is an invisible, GDPR-compliant CAPTCHA alternative engineered for privacy. It sets no cookies, tracks no one across websites and builds no profiles, verifying users through behavioral analysis and a proof-of-work nonce. Every plan hosts data in the EU by default and meets WCAG 2.1 AA. A single API key protects your site, with an Agent Gateway for legitimate AI agents.
Trust Center
Built on Security & Trust
SilentShield is designed from the ground up with privacy and security at its core. EU-hosted, GDPR-compliant, and built with zero-knowledge architecture.
Security Practices
Hosting in Germany
The check of your visitors runs on our servers in Germany, and the data is stored there — via the EU endpoint directly, with no CDN in between. We deliver the website and dashboard via Cloudflare (see Privacy Policy).
End-to-End Encryption
All data in transit and at rest is protected with AES-256 encryption. Communication between your site and our API uses TLS 1.3.
Built for data minimization
SilentShield sets no cookies and builds no profiles. The IP address is used only for the check and is not stored in plain text; with Zero-PII Mode, browser and device characteristics are dropped as well.
Regular Penetration Testing
Independent security firms conduct regular penetration tests and vulnerability assessments to ensure our infrastructure remains secure.
DDoS Protection
Enterprise-grade DDoS mitigation protects both our infrastructure and your integration endpoints from volumetric and application-layer attacks.
Secure Development Lifecycle
Every code change undergoes security review, automated SAST/DAST scanning, and follows OWASP best practices throughout development.
Compliance
GDPR Compliant
Ready for GDPR-compliant use, with a data processing agreement (DPA).
WCAG 2.1 Accessible
Our invisible approach means zero accessibility barriers. No CAPTCHAs, no puzzles, no challenges that exclude users with disabilities.
No Cookies
SilentShield sets no cookies. Only if a transmission fails does the widget keep the measurements in the tab's session storage until it sends them again; they expire when the tab is closed.
No Third-Party Data Sharing
Your visitors' data is neither sold nor shared with third parties for advertising or analytics purposes. We do not participate in any data exchange networks.
Infrastructure
Our servers are located in Germany
Ultra-low response times for seamless user experience
Military-grade AES-256 encryption for all data at rest and in transit
Data Handling
SilentShield uses a privacy-first approach to bot detection. Here is exactly how we handle data during the verification process:
Ready to secure your site the right way?
Join thousands of websites that trust SilentShield for invisible, privacy-first bot protection.