# SECURITY CHECKS IMPLEMENTED
- SSRF: validateUrl blocks private IPs, redirect check
- XXE: libxml_disable_entity_loader + LIBXML_NONET
- SQL: PDO prepared only
- XSS: e() escaping
- CSRF: token middleware (to be added in Auth)
- File upload: ZIP mime check + manifest validation
- Oversized XML: 5MB limit, RSS 2MB
- Rate limiting: Platform Policy Engine