Secure AI Chatbot: GDPR-Compliant with PromptLock Guard

Build Enterprise-Grade AI Chatbots with Bulletproof Privacy Protection

Transform your customer support with an AI chatbot that automatically detects and blocks sensitive data before it reaches any language model. This GDPR-compliant workflow uses PromptLock Guard to scan every user message for PII, PHI, and prompt injection attacks, ensuring your business stays compliant while delivering intelligent responses.

What this workflow does

User messages arrive through a webhook and are immediately processed by PromptLock Guard before any AI interaction. The system detects and redacts personally identifiable information, blocks malicious prompt injection attempts, and logs every interaction with detailed audit trails. Clean, safe inputs are routed to OpenAI for processing, while flagged content goes to review queues and blocked attempts receive rejection responses. Every interaction generates encrypted logs with timestamps, detected entities, compliance frameworks applied, and confidence scores—all exportable as CSV or JSON for ICO or DPO reviews.

Use cases

• Healthcare chatbots: Process patient inquiries while maintaining HIPAA compliance and protecting medical information
• Financial services: Handle customer questions without exposing credit card details or account numbers under PCI-DSS requirements
• GDPR compliance: Operate AI customer support across EU markets with automatic PII detection and redaction
• Enterprise security: Prevent data leaks and prompt injection attacks in internal AI tools

Technical details

Built with essential n8n nodes including webhook triggers, OpenAI integration, PromptLock Guard node, and webhook responses. The workflow features four distinct routing paths: Allow and Redact outputs connect to your AI processing, Flag routes to human review queues, and Block sends rejection responses. Configure compliance frameworks (GDPR, HIPAA, PCI-DSS) directly in node settings. Setup requires PromptLock Guard credentials from promptlock.io, with a generous free tier providing 3,000 prompts daily—no credit card required. The encrypted audit logging system ensures complete transparency for regulatory reviews while maintaining enterprise-grade security standards.