Technical Guide2026-05-1314 min Read
API Security and Compliance for LLM Applications
Security best practices, compliance requirements, and data protection strategies for LLM API integrations.
SecurityComplianceGDPRData Protection
Common Security Threats
- API key exposure
- Prompt injection attacks
- Data leakage through prompts
- Unauthorized access
- Abuse and fraud
Protection Measures
| Threat | Mitigation | Priority |
|---|---|---|
| Key exposure | Secrets manager + rotation | Critical |
| Prompt injection | Input sanitization | High |
| Data leakage | PII filtering | High |
| Abuse | Rate limiting + monitoring | Medium |
Compliance Requirements
GDPR: User data cannot be sent to third-party APIs without consent. CCPA: Users can request deletion of their data.
Audit Checklist
- Quarterly key rotation
- Monthly access review
- Weekly security logs review
- Annual penetration testing