Overview Security hardening is an ongoing concern — not a one-time setup. This skill covers account-level security decisions and application-level protection patterns that prevent credential leaks, fraud, and compliance violations. Lifecycle: Choose numbers ( ) → Register ( ) → Follow traffic rules ( ) → Secure everything (this skill) --- Credential Management API Keys vs Auth Tokens | Credential | Scope | Revocable | Use when | |-----------|-------|-----------|----------| | Auth Token | Full account access | Only by rotating (invalidates ALL API keys) | Never in production — use API keys ins…