Security Principles Secrets Management Secrets are injected via Kubernetes ConfigMaps and environment variables — never commit secrets to the repository. - Configuration files — Use for non-secret config - Environment variables — Secrets injected at runtime via prefix - Kubernetes — ConfigMaps mount configuration, Secrets mount credentials Validate All Inputs - Check bounds and formats before processing - Use and similar guards - Validate early, fail fast Sanitize External Data - Never trust data from queues, caches, user input, or external sources - Validate against expected schema - Sanitiz…