AI Data Loss Prevention — Your LLM Exfiltrated Customer Data in a Response. GDPR Violation, Fines, Customer Loss. Your CISO Called the CEO.
Your LLM has no PII detection, no secrets scanning and no output exfiltration detection. Customer data exfiltrated in responses, secrets in prompts, GDPR violation. €500,000 fine, customers lost, your CEO fired the CISO. Here's how to prevent it.
What is Data Loss Prevention? Simply explained.
Think of DLP like a firewall filter for your data: detect sensitive data before it leaves the system, scan for secrets before processing, mask PII in logs and responses. For LLMs, this means: PII detection in prompts, secrets scanning before LLM, output exfiltration detection, GDPR-compliant data masking. Good DLP means: never leak sensitive data again.
↓ Jump to technical depth5-Layer DLP Defense Architecture
PII Detection in Prompts
Detect PII (Personally Identifiable Information) in prompts before LLM submission. Names, emails, addresses, credit card numbers.
pii_detection: enabled: true pre_llm_scan: true types: [name, email, address, credit_card] auto_redaction: true
Secrets Scanning
Scan for API keys, passwords and tokens in prompts. Block submission to LLM if secrets found.
secrets_scanning: enabled: true pre_llm_scan: true patterns: [api_key, password, token] block_on_match: true
Output Exfiltration Detection
Detect data exfiltration in LLM responses. Anomaly detection for unusual data patterns.
exfiltration_detection: enabled: true output_scan: true anomaly_detection: true block_on_detection: true
GDPR Data Masking
Mask PII automatically in logs and responses according to GDPR Art. 5 data minimisation.
gdpr_masking: enabled: true auto_mask: true log_masking: true response_masking: true
Audit Logging
Log all DLP events with timestamp, severity and action. Tamper-evident for audit evidence.
audit_logging: enabled: true dlp_events: true tamper_evident: true retention_years: 3
Real-World Scars: Production Incidents
Customer data exfiltrated without output detection. GDPR violation, fines. Fix: Output exfiltration detection, GDPR masking.
Secrets in prompt without scanning. API keys exfiltrated, system compromised. Fix: Secrets scanning, block on match.
Immediate Actions: What to do today?
Enable PII Detection
Enable PII detection for all prompts.
Enable Secrets Scanning
Enable secrets scanning before LLM submission.
Enable Output Exfiltration Detection
Enable output exfiltration detection for all responses.
Interactive DLP Checklist
DLP Maturity Score Calculator
Industry Average: 15/100