# Key Concepts

- [Whitelist & Blacklist Rules](/mida-fraud-filter-ip-blocker/key-concepts/whitelist-blacklist-rules.md): In MIDA Fraud IP Blocker, rules are the foundation of access control. Two of the most important rule types are Whitelist and Blacklist, which define who is always allowed and who is explicitly denied.
- [Content Protection](/mida-fraud-filter-ip-blocker/key-concepts/content-protection.md): Fraud prevention is not only about orders and payments — it’s also about protecting the content of your storefront. MIDA Fraud IP Blocker includes content protection features designed.