Security Hardening Guide

Security Philosophy

Security is a process, not a feature. It must be built into every layer, not bolted on at the end.

Defense in Depth

Layer 1: Network     → Firewalls, WAF, rate limiting
Layer 2: Transport   → TLS, certificate validation
Layer 3: Application → Input validation, auth, authz
Layer 4: Data        → Encryption at rest, access control
Layer 5: Monitoring  → Logging, alerting, incident response

"A system is only as secure as its weakest link."