Langfuse Security Basics Overview Security practices for Langfuse LLM observability: credential management, PII scrubbing before tracing, self-hosted hardening, data retention, and secret scanning. Prerequisites - Langfuse instance (cloud or self-hosted) - API keys provisioned - Understanding of data privacy requirements (GDPR, SOC2, HIPAA) Instructions Step 1: Credential Security Langfuse uses two keys with different security profiles: Key security rules: - Public key ( ): Identifies the project. Safe in client-side code. - Secret key ( ): Grants write access. Server-side only. - Store in en…